Home / 14,134.40-21,201.60-9,987.20

Finding the Fourth Proportional to 14,134.40, 21,201.60 and 9,987.20

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Solution

The fourth proportional to 14,134.40, 21,201.60 and 9,987.20 is: 14,980.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,134.40 : 21,201.60 = 9,987.20 : x
  2. Step 2: Convert to fraction form
    14,134.40/21,201.60 = 9,987.20/x
  3. Step 3: Cross multiply
    14,134.40x = 21,201.60 × 9,987.20
  4. Step 4: Simplify right side
    14,134.40x = 211,744,619.52
  5. Step 5: Solve for x
    x = 211,744,619.52/14,134.40
  6. Step 6: Final answer
    x = 14,980.80

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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.