Home / 20,969.61-28,947.71-13,016.52

Finding the Fourth Proportional to 20,969.61, 28,947.71 and 13,016.52

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Solution

The fourth proportional to 20,969.61, 28,947.71 and 13,016.52 is: 17,968.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,969.61 : 28,947.71 = 13,016.52 : x
  2. Step 2: Convert to fraction form
    20,969.61/28,947.71 = 13,016.52/x
  3. Step 3: Cross multiply
    20,969.61x = 28,947.71 × 13,016.52
  4. Step 4: Simplify right side
    20,969.61x = 376,798,446.17
  5. Step 5: Solve for x
    x = 376,798,446.17/20,969.61
  6. Step 6: Final answer
    x = 17,968.79

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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.