Home / 19,320.60-28,990.20-9,454.50

Finding the Fourth Proportional to 19,320.60, 28,990.20 and 9,454.50

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Solution

The fourth proportional to 19,320.60, 28,990.20 and 9,454.50 is: 14,186.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,320.60 : 28,990.20 = 9,454.50 : x
  2. Step 2: Convert to fraction form
    19,320.60/28,990.20 = 9,454.50/x
  3. Step 3: Cross multiply
    19,320.60x = 28,990.20 × 9,454.50
  4. Step 4: Simplify right side
    19,320.60x = 274,087,845.90
  5. Step 5: Solve for x
    x = 274,087,845.90/19,320.60
  6. Step 6: Final answer
    x = 14,186.30

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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.