Home / 13,416.08-20,121.60-4,649.20

Finding the Fourth Proportional to 13,416.08, 20,121.60 and 4,649.20

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Solution

The fourth proportional to 13,416.08, 20,121.60 and 4,649.20 is: 6,972.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,416.08 : 20,121.60 = 4,649.20 : x
  2. Step 2: Convert to fraction form
    13,416.08/20,121.60 = 4,649.20/x
  3. Step 3: Cross multiply
    13,416.08x = 20,121.60 × 4,649.20
  4. Step 4: Simplify right side
    13,416.08x = 93,549,342.72
  5. Step 5: Solve for x
    x = 93,549,342.72/13,416.08
  6. Step 6: Final answer
    x = 6,972.93

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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.