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Finding the Fourth Proportional to 28,888.80, 43,337.40 and 12,248.80

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Solution

The fourth proportional to 28,888.80, 43,337.40 and 12,248.80 is: 18,374.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,888.80 : 43,337.40 = 12,248.80 : x
  2. Step 2: Convert to fraction form
    28,888.80/43,337.40 = 12,248.80/x
  3. Step 3: Cross multiply
    28,888.80x = 43,337.40 × 12,248.80
  4. Step 4: Simplify right side
    28,888.80x = 530,831,145.12
  5. Step 5: Solve for x
    x = 530,831,145.12/28,888.80
  6. Step 6: Final answer
    x = 18,374.98

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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.