Home / 28,621.70-42,957.25-19,862.76

Finding the Fourth Proportional to 28,621.70, 42,957.25 and 19,862.76

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Solution

The fourth proportional to 28,621.70, 42,957.25 and 19,862.76 is: 29,811.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,621.70 : 42,957.25 = 19,862.76 : x
  2. Step 2: Convert to fraction form
    28,621.70/42,957.25 = 19,862.76/x
  3. Step 3: Cross multiply
    28,621.70x = 42,957.25 × 19,862.76
  4. Step 4: Simplify right side
    28,621.70x = 853,249,497.35
  5. Step 5: Solve for x
    x = 853,249,497.35/28,621.70
  6. Step 6: Final answer
    x = 29,811.28

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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.