Home / 21,475.68-29,637.42-12,521.76

Finding the Fourth Proportional to 21,475.68, 29,637.42 and 12,521.76

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Solution

The fourth proportional to 21,475.68, 29,637.42 and 12,521.76 is: 17,280.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,475.68 : 29,637.42 = 12,521.76 : x
  2. Step 2: Convert to fraction form
    21,475.68/29,637.42 = 12,521.76/x
  3. Step 3: Cross multiply
    21,475.68x = 29,637.42 × 12,521.76
  4. Step 4: Simplify right side
    21,475.68x = 371,112,660.26
  5. Step 5: Solve for x
    x = 371,112,660.26/21,475.68
  6. Step 6: Final answer
    x = 17,280.60

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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.