Home / 28,456.60-42,636.30-18,056.20

Finding the Fourth Proportional to 28,456.60, 42,636.30 and 18,056.20

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Solution

The fourth proportional to 28,456.60, 42,636.30 and 18,056.20 is: 27,053.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,456.60 : 42,636.30 = 18,056.20 : x
  2. Step 2: Convert to fraction form
    28,456.60/42,636.30 = 18,056.20/x
  3. Step 3: Cross multiply
    28,456.60x = 42,636.30 × 18,056.20
  4. Step 4: Simplify right side
    28,456.60x = 769,849,560.06
  5. Step 5: Solve for x
    x = 769,849,560.06/28,456.60
  6. Step 6: Final answer
    x = 27,053.46

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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.