Home / 18,209,489,416.08-25,115,181,961.76-15,673,418,715.66

Finding the Fourth Proportional to 18,209,489,416.08, 25,115,181,961.76 and 15,673,418,715.66

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Solution

The fourth proportional to 18,209,489,416.08, 25,115,181,961.76 and 15,673,418,715.66 is: 21,617,342,145.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,209,489,416.08 : 25,115,181,961.76 = 15,673,418,715.66 : x
  2. Step 2: Convert to fraction form
    18,209,489,416.08/25,115,181,961.76 = 15,673,418,715.66/x
  3. Step 3: Cross multiply
    18,209,489,416.08x = 25,115,181,961.76 × 15,673,418,715.66
  4. Step 4: Simplify right side
    18,209,489,416.08x = 393,640,763,006,655,594,496
  5. Step 5: Solve for x
    x = 393,640,763,006,655,594,496/18,209,489,416.08
  6. Step 6: Final answer
    x = 21,617,342,145.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.