Home / 28,057.20-42,070.14-13,988.58

Finding the Fourth Proportional to 28,057.20, 42,070.14 and 13,988.58

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Solution

The fourth proportional to 28,057.20, 42,070.14 and 13,988.58 is: 20,975.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,057.20 : 42,070.14 = 13,988.58 : x
  2. Step 2: Convert to fraction form
    28,057.20/42,070.14 = 13,988.58/x
  3. Step 3: Cross multiply
    28,057.20x = 42,070.14 × 13,988.58
  4. Step 4: Simplify right side
    28,057.20x = 588,501,519.00
  5. Step 5: Solve for x
    x = 588,501,519.00/28,057.20
  6. Step 6: Final answer
    x = 20,975.06

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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.