Home / 19,149.12-28,689.12-9,887.04

Finding the Fourth Proportional to 19,149.12, 28,689.12 and 9,887.04

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Solution

The fourth proportional to 19,149.12, 28,689.12 and 9,887.04 is: 14,812.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,149.12 : 28,689.12 = 9,887.04 : x
  2. Step 2: Convert to fraction form
    19,149.12/28,689.12 = 9,887.04/x
  3. Step 3: Cross multiply
    19,149.12x = 28,689.12 × 9,887.04
  4. Step 4: Simplify right side
    19,149.12x = 283,650,477.00
  5. Step 5: Solve for x
    x = 283,650,477.00/19,149.12
  6. Step 6: Final answer
    x = 14,812.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.