Home / 27,931-38,545.06-15,356.02

Finding the Fourth Proportional to 27,931, 38,545.06 and 15,356.02

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Solution

The fourth proportional to 27,931, 38,545.06 and 15,356.02 is: 21,191.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,931 : 38,545.06 = 15,356.02 : x
  2. Step 2: Convert to fraction form
    27,931/38,545.06 = 15,356.02/x
  3. Step 3: Cross multiply
    27,931x = 38,545.06 × 15,356.02
  4. Step 4: Simplify right side
    27,931x = 591,898,712.26
  5. Step 5: Solve for x
    x = 591,898,712.26/27,931
  6. Step 6: Final answer
    x = 21,191.46

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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.