Home / 15,856.38-21,831.96-13,461.62

Finding the Fourth Proportional to 15,856.38, 21,831.96 and 13,461.62

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Solution

The fourth proportional to 15,856.38, 21,831.96 and 13,461.62 is: 18,534.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,856.38 : 21,831.96 = 13,461.62 : x
  2. Step 2: Convert to fraction form
    15,856.38/21,831.96 = 13,461.62/x
  3. Step 3: Cross multiply
    15,856.38x = 21,831.96 × 13,461.62
  4. Step 4: Simplify right side
    15,856.38x = 293,893,549.38
  5. Step 5: Solve for x
    x = 293,893,549.38/15,856.38
  6. Step 6: Final answer
    x = 18,534.72

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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.