Home / 15,614.60-21,555.56-9,649.76

Finding the Fourth Proportional to 15,614.60, 21,555.56 and 9,649.76

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Solution

The fourth proportional to 15,614.60, 21,555.56 and 9,649.76 is: 13,321.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,614.60 : 21,555.56 = 9,649.76 : x
  2. Step 2: Convert to fraction form
    15,614.60/21,555.56 = 9,649.76/x
  3. Step 3: Cross multiply
    15,614.60x = 21,555.56 × 9,649.76
  4. Step 4: Simplify right side
    15,614.60x = 208,005,980.67
  5. Step 5: Solve for x
    x = 208,005,980.67/15,614.60
  6. Step 6: Final answer
    x = 13,321.25

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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.