Home / 9,103.15-12,559.31-7,421.66

Finding the Fourth Proportional to 9,103.15, 12,559.31 and 7,421.66

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Solution

The fourth proportional to 9,103.15, 12,559.31 and 7,421.66 is: 10,239.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,103.15 : 12,559.31 = 7,421.66 : x
  2. Step 2: Convert to fraction form
    9,103.15/12,559.31 = 7,421.66/x
  3. Step 3: Cross multiply
    9,103.15x = 12,559.31 × 7,421.66
  4. Step 4: Simplify right side
    9,103.15x = 93,210,928.65
  5. Step 5: Solve for x
    x = 93,210,928.65/9,103.15
  6. Step 6: Final answer
    x = 10,239.41

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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.