Home / 11,559.30-17,347.05-4,990.20

Finding the Fourth Proportional to 11,559.30, 17,347.05 and 4,990.20

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Solution

The fourth proportional to 11,559.30, 17,347.05 and 4,990.20 is: 7,488.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,559.30 : 17,347.05 = 4,990.20 : x
  2. Step 2: Convert to fraction form
    11,559.30/17,347.05 = 4,990.20/x
  3. Step 3: Cross multiply
    11,559.30x = 17,347.05 × 4,990.20
  4. Step 4: Simplify right side
    11,559.30x = 86,565,248.91
  5. Step 5: Solve for x
    x = 86,565,248.91/11,559.30
  6. Step 6: Final answer
    x = 7,488.80

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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.