Home / 15,511.72-21,394.71-9,841.58

Finding the Fourth Proportional to 15,511.72, 21,394.71 and 9,841.58

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Solution

The fourth proportional to 15,511.72, 21,394.71 and 9,841.58 is: 13,574.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,511.72 : 21,394.71 = 9,841.58 : x
  2. Step 2: Convert to fraction form
    15,511.72/21,394.71 = 9,841.58/x
  3. Step 3: Cross multiply
    15,511.72x = 21,394.71 × 9,841.58
  4. Step 4: Simplify right side
    15,511.72x = 210,557,750.04
  5. Step 5: Solve for x
    x = 210,557,750.04/15,511.72
  6. Step 6: Final answer
    x = 13,574.11

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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.