Home / 21,309.39-29,376.18-14,916.20

Finding the Fourth Proportional to 21,309.39, 29,376.18 and 14,916.20

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Solution

The fourth proportional to 21,309.39, 29,376.18 and 14,916.20 is: 20,562.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,309.39 : 29,376.18 = 14,916.20 : x
  2. Step 2: Convert to fraction form
    21,309.39/29,376.18 = 14,916.20/x
  3. Step 3: Cross multiply
    21,309.39x = 29,376.18 × 14,916.20
  4. Step 4: Simplify right side
    21,309.39x = 438,180,829.24
  5. Step 5: Solve for x
    x = 438,180,829.24/21,309.39
  6. Step 6: Final answer
    x = 20,562.80

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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.