Home / 21,380.02-29,528.98-17,421.56

Finding the Fourth Proportional to 21,380.02, 29,528.98 and 17,421.56

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Solution

The fourth proportional to 21,380.02, 29,528.98 and 17,421.56 is: 24,061.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,380.02 : 29,528.98 = 17,421.56 : x
  2. Step 2: Convert to fraction form
    21,380.02/29,528.98 = 17,421.56/x
  3. Step 3: Cross multiply
    21,380.02x = 29,528.98 × 17,421.56
  4. Step 4: Simplify right side
    21,380.02x = 514,440,896.81
  5. Step 5: Solve for x
    x = 514,440,896.81/21,380.02
  6. Step 6: Final answer
    x = 24,061.76

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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.