Home / 28,073.56-42,123.50-12,276.57

Finding the Fourth Proportional to 28,073.56, 42,123.50 and 12,276.57

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Solution

The fourth proportional to 28,073.56, 42,123.50 and 12,276.57 is: 18,420.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,073.56 : 42,123.50 = 12,276.57 : x
  2. Step 2: Convert to fraction form
    28,073.56/42,123.50 = 12,276.57/x
  3. Step 3: Cross multiply
    28,073.56x = 42,123.50 × 12,276.57
  4. Step 4: Simplify right side
    28,073.56x = 517,132,096.40
  5. Step 5: Solve for x
    x = 517,132,096.40/28,073.56
  6. Step 6: Final answer
    x = 18,420.61

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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.