Home / 28,152.30-42,221.70-16,280.40

Finding the Fourth Proportional to 28,152.30, 42,221.70 and 16,280.40

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Solution

The fourth proportional to 28,152.30, 42,221.70 and 16,280.40 is: 24,416.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,152.30 : 42,221.70 = 16,280.40 : x
  2. Step 2: Convert to fraction form
    28,152.30/42,221.70 = 16,280.40/x
  3. Step 3: Cross multiply
    28,152.30x = 42,221.70 × 16,280.40
  4. Step 4: Simplify right side
    28,152.30x = 687,386,164.68
  5. Step 5: Solve for x
    x = 687,386,164.68/28,152.30
  6. Step 6: Final answer
    x = 24,416.70

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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.