Home / 27,687.04-38,208-15,111.76

Finding the Fourth Proportional to 27,687.04, 38,208 and 15,111.76

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Solution

The fourth proportional to 27,687.04, 38,208 and 15,111.76 is: 20,854.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,687.04 : 38,208 = 15,111.76 : x
  2. Step 2: Convert to fraction form
    27,687.04/38,208 = 15,111.76/x
  3. Step 3: Cross multiply
    27,687.04x = 38,208 × 15,111.76
  4. Step 4: Simplify right side
    27,687.04x = 577,390,126.08
  5. Step 5: Solve for x
    x = 577,390,126.08/27,687.04
  6. Step 6: Final answer
    x = 20,854.17

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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.