Home / 13,537.12-18,680.36-7,569.28

Finding the Fourth Proportional to 13,537.12, 18,680.36 and 7,569.28

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Solution

The fourth proportional to 13,537.12, 18,680.36 and 7,569.28 is: 10,445.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,537.12 : 18,680.36 = 7,569.28 : x
  2. Step 2: Convert to fraction form
    13,537.12/18,680.36 = 7,569.28/x
  3. Step 3: Cross multiply
    13,537.12x = 18,680.36 × 7,569.28
  4. Step 4: Simplify right side
    13,537.12x = 141,396,875.34
  5. Step 5: Solve for x
    x = 141,396,875.34/13,537.12
  6. Step 6: Final answer
    x = 10,445.12

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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.