Home / 10,356.19-14,279.18-8,460.79

Finding the Fourth Proportional to 10,356.19, 14,279.18 and 8,460.79

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Solution

The fourth proportional to 10,356.19, 14,279.18 and 8,460.79 is: 11,665.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,356.19 : 14,279.18 = 8,460.79 : x
  2. Step 2: Convert to fraction form
    10,356.19/14,279.18 = 8,460.79/x
  3. Step 3: Cross multiply
    10,356.19x = 14,279.18 × 8,460.79
  4. Step 4: Simplify right side
    10,356.19x = 120,813,101.05
  5. Step 5: Solve for x
    x = 120,813,101.05/10,356.19
  6. Step 6: Final answer
    x = 11,665.79

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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.