Home / 10,921.30-15,071.57-6,205.48

Finding the Fourth Proportional to 10,921.30, 15,071.57 and 6,205.48

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Solution

The fourth proportional to 10,921.30, 15,071.57 and 6,205.48 is: 8,563.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,921.30 : 15,071.57 = 6,205.48 : x
  2. Step 2: Convert to fraction form
    10,921.30/15,071.57 = 6,205.48/x
  3. Step 3: Cross multiply
    10,921.30x = 15,071.57 × 6,205.48
  4. Step 4: Simplify right side
    10,921.30x = 93,526,280.77
  5. Step 5: Solve for x
    x = 93,526,280.77/10,921.30
  6. Step 6: Final answer
    x = 8,563.66

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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.