Home / 15,330.64-21,155.66-9,372.28

Finding the Fourth Proportional to 15,330.64, 21,155.66 and 9,372.28

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Solution

The fourth proportional to 15,330.64, 21,155.66 and 9,372.28 is: 12,933.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,330.64 : 21,155.66 = 9,372.28 : x
  2. Step 2: Convert to fraction form
    15,330.64/21,155.66 = 9,372.28/x
  3. Step 3: Cross multiply
    15,330.64x = 21,155.66 × 9,372.28
  4. Step 4: Simplify right side
    15,330.64x = 198,276,769.10
  5. Step 5: Solve for x
    x = 198,276,769.10/15,330.64
  6. Step 6: Final answer
    x = 12,933.37

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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.