Home / 10,920.32-15,068.72-6,203.28

Finding the Fourth Proportional to 10,920.32, 15,068.72 and 6,203.28

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Solution

The fourth proportional to 10,920.32, 15,068.72 and 6,203.28 is: 8,559.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,920.32 : 15,068.72 = 6,203.28 : x
  2. Step 2: Convert to fraction form
    10,920.32/15,068.72 = 6,203.28/x
  3. Step 3: Cross multiply
    10,920.32x = 15,068.72 × 6,203.28
  4. Step 4: Simplify right side
    10,920.32x = 93,475,489.40
  5. Step 5: Solve for x
    x = 93,475,489.40/10,920.32
  6. Step 6: Final answer
    x = 8,559.78

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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.