Home / 27,875.94-38,468.16-15,129.15

Finding the Fourth Proportional to 27,875.94, 38,468.16 and 15,129.15

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Solution

The fourth proportional to 27,875.94, 38,468.16 and 15,129.15 is: 20,877.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,875.94 : 38,468.16 = 15,129.15 : x
  2. Step 2: Convert to fraction form
    27,875.94/38,468.16 = 15,129.15/x
  3. Step 3: Cross multiply
    27,875.94x = 38,468.16 × 15,129.15
  4. Step 4: Simplify right side
    27,875.94x = 581,990,294.88
  5. Step 5: Solve for x
    x = 581,990,294.88/27,875.94
  6. Step 6: Final answer
    x = 20,877.87

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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.