Home / 15,186.56-20,960.10-9,815.58

Finding the Fourth Proportional to 15,186.56, 20,960.10 and 9,815.58

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Solution

The fourth proportional to 15,186.56, 20,960.10 and 9,815.58 is: 13,547.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,186.56 : 20,960.10 = 9,815.58 : x
  2. Step 2: Convert to fraction form
    15,186.56/20,960.10 = 9,815.58/x
  3. Step 3: Cross multiply
    15,186.56x = 20,960.10 × 9,815.58
  4. Step 4: Simplify right side
    15,186.56x = 205,735,538.36
  5. Step 5: Solve for x
    x = 205,735,538.36/15,186.56
  6. Step 6: Final answer
    x = 13,547.22

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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.