Home / 31,080.16-42,889.13-17,649.64

Finding the Fourth Proportional to 31,080.16, 42,889.13 and 17,649.64

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Solution

The fourth proportional to 31,080.16, 42,889.13 and 17,649.64 is: 24,355.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,080.16 : 42,889.13 = 17,649.64 : x
  2. Step 2: Convert to fraction form
    31,080.16/42,889.13 = 17,649.64/x
  3. Step 3: Cross multiply
    31,080.16x = 42,889.13 × 17,649.64
  4. Step 4: Simplify right side
    31,080.16x = 756,977,855.76
  5. Step 5: Solve for x
    x = 756,977,855.76/31,080.16
  6. Step 6: Final answer
    x = 24,355.66

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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.