Home / 10,987.40-16,480.58-3,590.88

Finding the Fourth Proportional to 10,987.40, 16,480.58 and 3,590.88

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Solution

The fourth proportional to 10,987.40, 16,480.58 and 3,590.88 is: 5,386.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,987.40 : 16,480.58 = 3,590.88 : x
  2. Step 2: Convert to fraction form
    10,987.40/16,480.58 = 3,590.88/x
  3. Step 3: Cross multiply
    10,987.40x = 16,480.58 × 3,590.88
  4. Step 4: Simplify right side
    10,987.40x = 59,179,767.16
  5. Step 5: Solve for x
    x = 59,179,767.16/10,987.40
  6. Step 6: Final answer
    x = 5,386.15

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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.