Home / 12,531.28-18,789.63-4,740.70

Finding the Fourth Proportional to 12,531.28, 18,789.63 and 4,740.70

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Solution

The fourth proportional to 12,531.28, 18,789.63 and 4,740.70 is: 7,108.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,531.28 : 18,789.63 = 4,740.70 : x
  2. Step 2: Convert to fraction form
    12,531.28/18,789.63 = 4,740.70/x
  3. Step 3: Cross multiply
    12,531.28x = 18,789.63 × 4,740.70
  4. Step 4: Simplify right side
    12,531.28x = 89,075,998.94
  5. Step 5: Solve for x
    x = 89,075,998.94/12,531.28
  6. Step 6: Final answer
    x = 7,108.29

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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.