Home / 13,307.76-18,365.66-7,644.15

Finding the Fourth Proportional to 13,307.76, 18,365.66 and 7,644.15

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Solution

The fourth proportional to 13,307.76, 18,365.66 and 7,644.15 is: 10,549.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,307.76 : 18,365.66 = 7,644.15 : x
  2. Step 2: Convert to fraction form
    13,307.76/18,365.66 = 7,644.15/x
  3. Step 3: Cross multiply
    13,307.76x = 18,365.66 × 7,644.15
  4. Step 4: Simplify right side
    13,307.76x = 140,389,821.67
  5. Step 5: Solve for x
    x = 140,389,821.67/13,307.76
  6. Step 6: Final answer
    x = 10,549.47

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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.