Home / 15,825.60-21,839.76-9,113.58

Finding the Fourth Proportional to 15,825.60, 21,839.76 and 9,113.58

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Solution

The fourth proportional to 15,825.60, 21,839.76 and 9,113.58 is: 12,576.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,825.60 : 21,839.76 = 9,113.58 : x
  2. Step 2: Convert to fraction form
    15,825.60/21,839.76 = 9,113.58/x
  3. Step 3: Cross multiply
    15,825.60x = 21,839.76 × 9,113.58
  4. Step 4: Simplify right side
    15,825.60x = 199,038,399.94
  5. Step 5: Solve for x
    x = 199,038,399.94/15,825.60
  6. Step 6: Final answer
    x = 12,576.99

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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.