Home / 14,939.12-20,615.80-8,225.04

Finding the Fourth Proportional to 14,939.12, 20,615.80 and 8,225.04

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Solution

The fourth proportional to 14,939.12, 20,615.80 and 8,225.04 is: 11,350.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,939.12 : 20,615.80 = 8,225.04 : x
  2. Step 2: Convert to fraction form
    14,939.12/20,615.80 = 8,225.04/x
  3. Step 3: Cross multiply
    14,939.12x = 20,615.80 × 8,225.04
  4. Step 4: Simplify right side
    14,939.12x = 169,565,779.63
  5. Step 5: Solve for x
    x = 169,565,779.63/14,939.12
  6. Step 6: Final answer
    x = 11,350.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.