Home / 8,316.72-12,421.20-7,535.16

Finding the Fourth Proportional to 8,316.72, 12,421.20 and 7,535.16

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Solution

The fourth proportional to 8,316.72, 12,421.20 and 7,535.16 is: 11,253.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,316.72 : 12,421.20 = 7,535.16 : x
  2. Step 2: Convert to fraction form
    8,316.72/12,421.20 = 7,535.16/x
  3. Step 3: Cross multiply
    8,316.72x = 12,421.20 × 7,535.16
  4. Step 4: Simplify right side
    8,316.72x = 93,595,729.39
  5. Step 5: Solve for x
    x = 93,595,729.39/8,316.72
  6. Step 6: Final answer
    x = 11,253.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.