Home / 15,455.68-21,328.96-9,080.56

Finding the Fourth Proportional to 15,455.68, 21,328.96 and 9,080.56

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Solution

The fourth proportional to 15,455.68, 21,328.96 and 9,080.56 is: 12,531.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,455.68 : 21,328.96 = 9,080.56 : x
  2. Step 2: Convert to fraction form
    15,455.68/21,328.96 = 9,080.56/x
  3. Step 3: Cross multiply
    15,455.68x = 21,328.96 × 9,080.56
  4. Step 4: Simplify right side
    15,455.68x = 193,678,901.02
  5. Step 5: Solve for x
    x = 193,678,901.02/15,455.68
  6. Step 6: Final answer
    x = 12,531.24

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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.