Home / 27,998.55-38,637.99-15,423.30

Finding the Fourth Proportional to 27,998.55, 38,637.99 and 15,423.30

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Solution

The fourth proportional to 27,998.55, 38,637.99 and 15,423.30 is: 21,284.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,998.55 : 38,637.99 = 15,423.30 : x
  2. Step 2: Convert to fraction form
    27,998.55/38,637.99 = 15,423.30/x
  3. Step 3: Cross multiply
    27,998.55x = 38,637.99 × 15,423.30
  4. Step 4: Simplify right side
    27,998.55x = 595,925,311.17
  5. Step 5: Solve for x
    x = 595,925,311.17/27,998.55
  6. Step 6: Final answer
    x = 21,284.15

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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.