Home / 13,445.12-18,554.40-7,856.12

Finding the Fourth Proportional to 13,445.12, 18,554.40 and 7,856.12

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Solution

The fourth proportional to 13,445.12, 18,554.40 and 7,856.12 is: 10,841.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,445.12 : 18,554.40 = 7,856.12 : x
  2. Step 2: Convert to fraction form
    13,445.12/18,554.40 = 7,856.12/x
  3. Step 3: Cross multiply
    13,445.12x = 18,554.40 × 7,856.12
  4. Step 4: Simplify right side
    13,445.12x = 145,765,592.93
  5. Step 5: Solve for x
    x = 145,765,592.93/13,445.12
  6. Step 6: Final answer
    x = 10,841.52

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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.