Home / 15,016,713,971.54-20,740,264,354.78-9,889,680,472.70

Finding the Fourth Proportional to 15,016,713,971.54, 20,740,264,354.78 and 9,889,680,472.70

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Solution

The fourth proportional to 15,016,713,971.54, 20,740,264,354.78 and 9,889,680,472.70 is: 13,659,085,987.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,016,713,971.54 : 20,740,264,354.78 = 9,889,680,472.70 : x
  2. Step 2: Convert to fraction form
    15,016,713,971.54/20,740,264,354.78 = 9,889,680,472.70/x
  3. Step 3: Cross multiply
    15,016,713,971.54x = 20,740,264,354.78 × 9,889,680,472.70
  4. Step 4: Simplify right side
    15,016,713,971.54x = 205,114,587,387,980,152,832
  5. Step 5: Solve for x
    x = 205,114,587,387,980,152,832/15,016,713,971.54
  6. Step 6: Final answer
    x = 13,659,085,987.57

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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.