Home / 28,475.08-42,712.70-16,772.20

Finding the Fourth Proportional to 28,475.08, 42,712.70 and 16,772.20

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Solution

The fourth proportional to 28,475.08, 42,712.70 and 16,772.20 is: 25,158.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,475.08 : 42,712.70 = 16,772.20 : x
  2. Step 2: Convert to fraction form
    28,475.08/42,712.70 = 16,772.20/x
  3. Step 3: Cross multiply
    28,475.08x = 42,712.70 × 16,772.20
  4. Step 4: Simplify right side
    28,475.08x = 716,385,946.94
  5. Step 5: Solve for x
    x = 716,385,946.94/28,475.08
  6. Step 6: Final answer
    x = 25,158.35

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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.