Home / 27,720.68-38,254.65-15,145.70

Finding the Fourth Proportional to 27,720.68, 38,254.65 and 15,145.70

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Solution

The fourth proportional to 27,720.68, 38,254.65 and 15,145.70 is: 20,901.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,720.68 : 38,254.65 = 15,145.70 : x
  2. Step 2: Convert to fraction form
    27,720.68/38,254.65 = 15,145.70/x
  3. Step 3: Cross multiply
    27,720.68x = 38,254.65 × 15,145.70
  4. Step 4: Simplify right side
    27,720.68x = 579,393,452.51
  5. Step 5: Solve for x
    x = 579,393,452.51/27,720.68
  6. Step 6: Final answer
    x = 20,901.13

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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.