Home / 20,508.10-28,300.71-12,550.30

Finding the Fourth Proportional to 20,508.10, 28,300.71 and 12,550.30

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Solution

The fourth proportional to 20,508.10, 28,300.71 and 12,550.30 is: 17,319.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,508.10 : 28,300.71 = 12,550.30 : x
  2. Step 2: Convert to fraction form
    20,508.10/28,300.71 = 12,550.30/x
  3. Step 3: Cross multiply
    20,508.10x = 28,300.71 × 12,550.30
  4. Step 4: Simplify right side
    20,508.10x = 355,182,400.71
  5. Step 5: Solve for x
    x = 355,182,400.71/20,508.10
  6. Step 6: Final answer
    x = 17,319.13

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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.