Home / 9,945.40-14,927.70-8,486.20

Finding the Fourth Proportional to 9,945.40, 14,927.70 and 8,486.20

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Solution

The fourth proportional to 9,945.40, 14,927.70 and 8,486.20 is: 12,737.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,945.40 : 14,927.70 = 8,486.20 : x
  2. Step 2: Convert to fraction form
    9,945.40/14,927.70 = 8,486.20/x
  3. Step 3: Cross multiply
    9,945.40x = 14,927.70 × 8,486.20
  4. Step 4: Simplify right side
    9,945.40x = 126,679,447.74
  5. Step 5: Solve for x
    x = 126,679,447.74/9,945.40
  6. Step 6: Final answer
    x = 12,737.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.