Home / 14,279.55-19,705.45-7,905.76

Finding the Fourth Proportional to 14,279.55, 19,705.45 and 7,905.76

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Solution

The fourth proportional to 14,279.55, 19,705.45 and 7,905.76 is: 10,909.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,279.55 : 19,705.45 = 7,905.76 : x
  2. Step 2: Convert to fraction form
    14,279.55/19,705.45 = 7,905.76/x
  3. Step 3: Cross multiply
    14,279.55x = 19,705.45 × 7,905.76
  4. Step 4: Simplify right side
    14,279.55x = 155,786,558.39
  5. Step 5: Solve for x
    x = 155,786,558.39/14,279.55
  6. Step 6: Final answer
    x = 10,909.77

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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.