Home / 18,681.15-25,779.03-10,613.74

Finding the Fourth Proportional to 18,681.15, 25,779.03 and 10,613.74

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Solution

The fourth proportional to 18,681.15, 25,779.03 and 10,613.74 is: 14,646.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,681.15 : 25,779.03 = 10,613.74 : x
  2. Step 2: Convert to fraction form
    18,681.15/25,779.03 = 10,613.74/x
  3. Step 3: Cross multiply
    18,681.15x = 25,779.03 × 10,613.74
  4. Step 4: Simplify right side
    18,681.15x = 273,612,028.02
  5. Step 5: Solve for x
    x = 273,612,028.02/18,681.15
  6. Step 6: Final answer
    x = 14,646.42

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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.