Home / 27,720.18-38,254.41-15,145.74

Finding the Fourth Proportional to 27,720.18, 38,254.41 and 15,145.74

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Solution

The fourth proportional to 27,720.18, 38,254.41 and 15,145.74 is: 20,901.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,720.18 : 38,254.41 = 15,145.74 : x
  2. Step 2: Convert to fraction form
    27,720.18/38,254.41 = 15,145.74/x
  3. Step 3: Cross multiply
    27,720.18x = 38,254.41 × 15,145.74
  4. Step 4: Simplify right side
    27,720.18x = 579,391,347.71
  5. Step 5: Solve for x
    x = 579,391,347.71/27,720.18
  6. Step 6: Final answer
    x = 20,901.43

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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.