Home / 15,955.76-22,020.36-9,671.60

Finding the Fourth Proportional to 15,955.76, 22,020.36 and 9,671.60

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Solution

The fourth proportional to 15,955.76, 22,020.36 and 9,671.60 is: 13,347.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,955.76 : 22,020.36 = 9,671.60 : x
  2. Step 2: Convert to fraction form
    15,955.76/22,020.36 = 9,671.60/x
  3. Step 3: Cross multiply
    15,955.76x = 22,020.36 × 9,671.60
  4. Step 4: Simplify right side
    15,955.76x = 212,972,113.78
  5. Step 5: Solve for x
    x = 212,972,113.78/15,955.76
  6. Step 6: Final answer
    x = 13,347.66

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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.