Home / 10,921.80-15,071.74-6,141.93

Finding the Fourth Proportional to 10,921.80, 15,071.74 and 6,141.93

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Solution

The fourth proportional to 10,921.80, 15,071.74 and 6,141.93 is: 8,475.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,921.80 : 15,071.74 = 6,141.93 : x
  2. Step 2: Convert to fraction form
    10,921.80/15,071.74 = 6,141.93/x
  3. Step 3: Cross multiply
    10,921.80x = 15,071.74 × 6,141.93
  4. Step 4: Simplify right side
    10,921.80x = 92,569,500.18
  5. Step 5: Solve for x
    x = 92,569,500.18/10,921.80
  6. Step 6: Final answer
    x = 8,475.66

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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.