Home / 10,888.20-16,332.30-2,990.70

Finding the Fourth Proportional to 10,888.20, 16,332.30 and 2,990.70

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Solution

The fourth proportional to 10,888.20, 16,332.30 and 2,990.70 is: 4,486.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,888.20 : 16,332.30 = 2,990.70 : x
  2. Step 2: Convert to fraction form
    10,888.20/16,332.30 = 2,990.70/x
  3. Step 3: Cross multiply
    10,888.20x = 16,332.30 × 2,990.70
  4. Step 4: Simplify right side
    10,888.20x = 48,845,009.61
  5. Step 5: Solve for x
    x = 48,845,009.61/10,888.20
  6. Step 6: Final answer
    x = 4,486.05

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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.