Home / 28,320.71-42,495.35-20,053.85

Finding the Fourth Proportional to 28,320.71, 42,495.35 and 20,053.85

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Solution

The fourth proportional to 28,320.71, 42,495.35 and 20,053.85 is: 30,090.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,320.71 : 42,495.35 = 20,053.85 : x
  2. Step 2: Convert to fraction form
    28,320.71/42,495.35 = 20,053.85/x
  3. Step 3: Cross multiply
    28,320.71x = 42,495.35 × 20,053.85
  4. Step 4: Simplify right side
    28,320.71x = 852,195,061.85
  5. Step 5: Solve for x
    x = 852,195,061.85/28,320.71
  6. Step 6: Final answer
    x = 30,090.88

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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.