Home / 10,920.60-15,073.56-6,445.08

Finding the Fourth Proportional to 10,920.60, 15,073.56 and 6,445.08

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Solution

The fourth proportional to 10,920.60, 15,073.56 and 6,445.08 is: 8,896.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,920.60 : 15,073.56 = 6,445.08 : x
  2. Step 2: Convert to fraction form
    10,920.60/15,073.56 = 6,445.08/x
  3. Step 3: Cross multiply
    10,920.60x = 15,073.56 × 6,445.08
  4. Step 4: Simplify right side
    10,920.60x = 97,150,300.08
  5. Step 5: Solve for x
    x = 97,150,300.08/10,920.60
  6. Step 6: Final answer
    x = 8,896.06

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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.