Home / 28,031.59-42,057.51-13,990.51

Finding the Fourth Proportional to 28,031.59, 42,057.51 and 13,990.51

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Solution

The fourth proportional to 28,031.59, 42,057.51 and 13,990.51 is: 20,990.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,031.59 : 42,057.51 = 13,990.51 : x
  2. Step 2: Convert to fraction form
    28,031.59/42,057.51 = 13,990.51/x
  3. Step 3: Cross multiply
    28,031.59x = 42,057.51 × 13,990.51
  4. Step 4: Simplify right side
    28,031.59x = 588,406,014.23
  5. Step 5: Solve for x
    x = 588,406,014.23/28,031.59
  6. Step 6: Final answer
    x = 20,990.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.