Home / 10,318.78-14,240.16-5,603.05

Finding the Fourth Proportional to 10,318.78, 14,240.16 and 5,603.05

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Solution

The fourth proportional to 10,318.78, 14,240.16 and 5,603.05 is: 7,732.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,318.78 : 14,240.16 = 5,603.05 : x
  2. Step 2: Convert to fraction form
    10,318.78/14,240.16 = 5,603.05/x
  3. Step 3: Cross multiply
    10,318.78x = 14,240.16 × 5,603.05
  4. Step 4: Simplify right side
    10,318.78x = 79,788,328.49
  5. Step 5: Solve for x
    x = 79,788,328.49/10,318.78
  6. Step 6: Final answer
    x = 7,732.34

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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.