Home / 10,186.90-15,281.52-9,140.48

Finding the Fourth Proportional to 10,186.90, 15,281.52 and 9,140.48

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Solution

The fourth proportional to 10,186.90, 15,281.52 and 9,140.48 is: 13,711.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,186.90 : 15,281.52 = 9,140.48 : x
  2. Step 2: Convert to fraction form
    10,186.90/15,281.52 = 9,140.48/x
  3. Step 3: Cross multiply
    10,186.90x = 15,281.52 × 9,140.48
  4. Step 4: Simplify right side
    10,186.90x = 139,680,431.86
  5. Step 5: Solve for x
    x = 139,680,431.86/10,186.90
  6. Step 6: Final answer
    x = 13,711.77

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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.