Home / 15,501.60-21,391.14-8,427.87

Finding the Fourth Proportional to 15,501.60, 21,391.14 and 8,427.87

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Solution

The fourth proportional to 15,501.60, 21,391.14 and 8,427.87 is: 11,629.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,501.60 : 21,391.14 = 8,427.87 : x
  2. Step 2: Convert to fraction form
    15,501.60/21,391.14 = 8,427.87/x
  3. Step 3: Cross multiply
    15,501.60x = 21,391.14 × 8,427.87
  4. Step 4: Simplify right side
    15,501.60x = 180,281,747.07
  5. Step 5: Solve for x
    x = 180,281,747.07/15,501.60
  6. Step 6: Final answer
    x = 11,629.88

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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.