Home / 15,124.39-20,873.50-9,155.90

Finding the Fourth Proportional to 15,124.39, 20,873.50 and 9,155.90

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Solution

The fourth proportional to 15,124.39, 20,873.50 and 9,155.90 is: 12,636.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,124.39 : 20,873.50 = 9,155.90 : x
  2. Step 2: Convert to fraction form
    15,124.39/20,873.50 = 9,155.90/x
  3. Step 3: Cross multiply
    15,124.39x = 20,873.50 × 9,155.90
  4. Step 4: Simplify right side
    15,124.39x = 191,115,707.94
  5. Step 5: Solve for x
    x = 191,115,707.94/15,124.39
  6. Step 6: Final answer
    x = 12,636.26

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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.