Home / 12,639.32-17,432.86-9,281.08

Finding the Fourth Proportional to 12,639.32, 17,432.86 and 9,281.08

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Solution

The fourth proportional to 12,639.32, 17,432.86 and 9,281.08 is: 12,800.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,639.32 : 17,432.86 = 9,281.08 : x
  2. Step 2: Convert to fraction form
    12,639.32/17,432.86 = 9,281.08/x
  3. Step 3: Cross multiply
    12,639.32x = 17,432.86 × 9,281.08
  4. Step 4: Simplify right side
    12,639.32x = 161,795,768.29
  5. Step 5: Solve for x
    x = 161,795,768.29/12,639.32
  6. Step 6: Final answer
    x = 12,800.99

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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.