Home / 13,591.47-18,747.58-9,820.18

Finding the Fourth Proportional to 13,591.47, 18,747.58 and 9,820.18

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Solution

The fourth proportional to 13,591.47, 18,747.58 and 9,820.18 is: 13,545.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,591.47 : 18,747.58 = 9,820.18 : x
  2. Step 2: Convert to fraction form
    13,591.47/18,747.58 = 9,820.18/x
  3. Step 3: Cross multiply
    13,591.47x = 18,747.58 × 9,820.18
  4. Step 4: Simplify right side
    13,591.47x = 184,104,610.16
  5. Step 5: Solve for x
    x = 184,104,610.16/13,591.47
  6. Step 6: Final answer
    x = 13,545.60

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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.