Home / 13,575.10-18,731.46-8,271.58

Finding the Fourth Proportional to 13,575.10, 18,731.46 and 8,271.58

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Solution

The fourth proportional to 13,575.10, 18,731.46 and 8,271.58 is: 11,413.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,575.10 : 18,731.46 = 8,271.58 : x
  2. Step 2: Convert to fraction form
    13,575.10/18,731.46 = 8,271.58/x
  3. Step 3: Cross multiply
    13,575.10x = 18,731.46 × 8,271.58
  4. Step 4: Simplify right side
    13,575.10x = 154,938,769.91
  5. Step 5: Solve for x
    x = 154,938,769.91/13,575.10
  6. Step 6: Final answer
    x = 11,413.45

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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.