Home / 21,440.81-29,585.50-12,366.50

Finding the Fourth Proportional to 21,440.81, 29,585.50 and 12,366.50

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Solution

The fourth proportional to 21,440.81, 29,585.50 and 12,366.50 is: 17,064.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,440.81 : 29,585.50 = 12,366.50 : x
  2. Step 2: Convert to fraction form
    21,440.81/29,585.50 = 12,366.50/x
  3. Step 3: Cross multiply
    21,440.81x = 29,585.50 × 12,366.50
  4. Step 4: Simplify right side
    21,440.81x = 365,868,906.91
  5. Step 5: Solve for x
    x = 365,868,906.91/21,440.81
  6. Step 6: Final answer
    x = 17,064.13

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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.