Home / 18,987.60-28,484.36-9,125.04

Finding the Fourth Proportional to 18,987.60, 28,484.36 and 9,125.04

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Solution

The fourth proportional to 18,987.60, 28,484.36 and 9,125.04 is: 13,688.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,987.60 : 28,484.36 = 9,125.04 : x
  2. Step 2: Convert to fraction form
    18,987.60/28,484.36 = 9,125.04/x
  3. Step 3: Cross multiply
    18,987.60x = 28,484.36 × 9,125.04
  4. Step 4: Simplify right side
    18,987.60x = 259,920,924.37
  5. Step 5: Solve for x
    x = 259,920,924.37/18,987.60
  6. Step 6: Final answer
    x = 13,688.98

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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.