Home / 13,124.55-18,117.93-7,745.16

Finding the Fourth Proportional to 13,124.55, 18,117.93 and 7,745.16

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Solution

The fourth proportional to 13,124.55, 18,117.93 and 7,745.16 is: 10,691.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,124.55 : 18,117.93 = 7,745.16 : x
  2. Step 2: Convert to fraction form
    13,124.55/18,117.93 = 7,745.16/x
  3. Step 3: Cross multiply
    13,124.55x = 18,117.93 × 7,745.16
  4. Step 4: Simplify right side
    13,124.55x = 140,326,266.72
  5. Step 5: Solve for x
    x = 140,326,266.72/13,124.55
  6. Step 6: Final answer
    x = 10,691.89

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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.