Home / 18,707.07-28,065.08-5,559.40

Finding the Fourth Proportional to 18,707.07, 28,065.08 and 5,559.40

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Solution

The fourth proportional to 18,707.07, 28,065.08 and 5,559.40 is: 8,340.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,707.07 : 28,065.08 = 5,559.40 : x
  2. Step 2: Convert to fraction form
    18,707.07/28,065.08 = 5,559.40/x
  3. Step 3: Cross multiply
    18,707.07x = 28,065.08 × 5,559.40
  4. Step 4: Simplify right side
    18,707.07x = 156,025,054.73
  5. Step 5: Solve for x
    x = 156,025,054.73/18,707.07
  6. Step 6: Final answer
    x = 8,340.43

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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.