Home / 10,403.49-14,356.74-5,687.79

Finding the Fourth Proportional to 10,403.49, 14,356.74 and 5,687.79

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Solution

The fourth proportional to 10,403.49, 14,356.74 and 5,687.79 is: 7,849.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,403.49 : 14,356.74 = 5,687.79 : x
  2. Step 2: Convert to fraction form
    10,403.49/14,356.74 = 5,687.79/x
  3. Step 3: Cross multiply
    10,403.49x = 14,356.74 × 5,687.79
  4. Step 4: Simplify right side
    10,403.49x = 81,658,122.20
  5. Step 5: Solve for x
    x = 81,658,122.20/10,403.49
  6. Step 6: Final answer
    x = 7,849.11

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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.