Home / 15,506.64-21,399.39-9,534.78

Finding the Fourth Proportional to 15,506.64, 21,399.39 and 9,534.78

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Solution

The fourth proportional to 15,506.64, 21,399.39 and 9,534.78 is: 13,158.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,506.64 : 21,399.39 = 9,534.78 : x
  2. Step 2: Convert to fraction form
    15,506.64/21,399.39 = 9,534.78/x
  3. Step 3: Cross multiply
    15,506.64x = 21,399.39 × 9,534.78
  4. Step 4: Simplify right side
    15,506.64x = 204,038,475.78
  5. Step 5: Solve for x
    x = 204,038,475.78/15,506.64
  6. Step 6: Final answer
    x = 13,158.14

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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.