Home / 21,562.04-29,755.68-12,130.40

Finding the Fourth Proportional to 21,562.04, 29,755.68 and 12,130.40

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Solution

The fourth proportional to 21,562.04, 29,755.68 and 12,130.40 is: 16,739.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,562.04 : 29,755.68 = 12,130.40 : x
  2. Step 2: Convert to fraction form
    21,562.04/29,755.68 = 12,130.40/x
  3. Step 3: Cross multiply
    21,562.04x = 29,755.68 × 12,130.40
  4. Step 4: Simplify right side
    21,562.04x = 360,948,300.67
  5. Step 5: Solve for x
    x = 360,948,300.67/21,562.04
  6. Step 6: Final answer
    x = 16,739.99

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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.