Home / 15,000.12-20,688.66-9,025.56

Finding the Fourth Proportional to 15,000.12, 20,688.66 and 9,025.56

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Solution

The fourth proportional to 15,000.12, 20,688.66 and 9,025.56 is: 12,448.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,000.12 : 20,688.66 = 9,025.56 : x
  2. Step 2: Convert to fraction form
    15,000.12/20,688.66 = 9,025.56/x
  3. Step 3: Cross multiply
    15,000.12x = 20,688.66 × 9,025.56
  4. Step 4: Simplify right side
    15,000.12x = 186,726,742.15
  5. Step 5: Solve for x
    x = 186,726,742.15/15,000.12
  6. Step 6: Final answer
    x = 12,448.35

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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.