Home / 15,731.60-21,709.56-9,443.96

Finding the Fourth Proportional to 15,731.60, 21,709.56 and 9,443.96

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Solution

The fourth proportional to 15,731.60, 21,709.56 and 9,443.96 is: 13,032.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,731.60 : 21,709.56 = 9,443.96 : x
  2. Step 2: Convert to fraction form
    15,731.60/21,709.56 = 9,443.96/x
  3. Step 3: Cross multiply
    15,731.60x = 21,709.56 × 9,443.96
  4. Step 4: Simplify right side
    15,731.60x = 205,024,216.26
  5. Step 5: Solve for x
    x = 205,024,216.26/15,731.60
  6. Step 6: Final answer
    x = 13,032.64

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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.