Home / 27,710.91-38,239.29-15,135.66

Finding the Fourth Proportional to 27,710.91, 38,239.29 and 15,135.66

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Solution

The fourth proportional to 27,710.91, 38,239.29 and 15,135.66 is: 20,886.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,710.91 : 38,239.29 = 15,135.66 : x
  2. Step 2: Convert to fraction form
    27,710.91/38,239.29 = 15,135.66/x
  3. Step 3: Cross multiply
    27,710.91x = 38,239.29 × 15,135.66
  4. Step 4: Simplify right side
    27,710.91x = 578,776,892.08
  5. Step 5: Solve for x
    x = 578,776,892.08/27,710.91
  6. Step 6: Final answer
    x = 20,886.25

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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.