Home / 13,325.86-19,988.76-5,431.66

Finding the Fourth Proportional to 13,325.86, 19,988.76 and 5,431.66

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Solution

The fourth proportional to 13,325.86, 19,988.76 and 5,431.66 is: 8,147.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,325.86 : 19,988.76 = 5,431.66 : x
  2. Step 2: Convert to fraction form
    13,325.86/19,988.76 = 5,431.66/x
  3. Step 3: Cross multiply
    13,325.86x = 19,988.76 × 5,431.66
  4. Step 4: Simplify right side
    13,325.86x = 108,572,148.14
  5. Step 5: Solve for x
    x = 108,572,148.14/13,325.86
  6. Step 6: Final answer
    x = 8,147.48

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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.