Home / 18,867.16-28,306.66-7,779.07

Finding the Fourth Proportional to 18,867.16, 28,306.66 and 7,779.07

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Solution

The fourth proportional to 18,867.16, 28,306.66 and 7,779.07 is: 11,671.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,867.16 : 28,306.66 = 7,779.07 : x
  2. Step 2: Convert to fraction form
    18,867.16/28,306.66 = 7,779.07/x
  3. Step 3: Cross multiply
    18,867.16x = 28,306.66 × 7,779.07
  4. Step 4: Simplify right side
    18,867.16x = 220,199,489.61
  5. Step 5: Solve for x
    x = 220,199,489.61/18,867.16
  6. Step 6: Final answer
    x = 11,671.05

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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.