Home / 21,478.53-29,638.40-12,045.27

Finding the Fourth Proportional to 21,478.53, 29,638.40 and 12,045.27

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Solution

The fourth proportional to 21,478.53, 29,638.40 and 12,045.27 is: 16,621.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,478.53 : 29,638.40 = 12,045.27 : x
  2. Step 2: Convert to fraction form
    21,478.53/29,638.40 = 12,045.27/x
  3. Step 3: Cross multiply
    21,478.53x = 29,638.40 × 12,045.27
  4. Step 4: Simplify right side
    21,478.53x = 357,002,470.14
  5. Step 5: Solve for x
    x = 357,002,470.14/21,478.53
  6. Step 6: Final answer
    x = 16,621.36

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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.