Home / 28,490.04-42,739.11-8,770.23

Finding the Fourth Proportional to 28,490.04, 42,739.11 and 8,770.23

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Solution

The fourth proportional to 28,490.04, 42,739.11 and 8,770.23 is: 13,156.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,490.04 : 42,739.11 = 8,770.23 : x
  2. Step 2: Convert to fraction form
    28,490.04/42,739.11 = 8,770.23/x
  3. Step 3: Cross multiply
    28,490.04x = 42,739.11 × 8,770.23
  4. Step 4: Simplify right side
    28,490.04x = 374,831,824.70
  5. Step 5: Solve for x
    x = 374,831,824.70/28,490.04
  6. Step 6: Final answer
    x = 13,156.59

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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.