Home / 10,140.38-13,999.63-6,740.14

Finding the Fourth Proportional to 10,140.38, 13,999.63 and 6,740.14

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Solution

The fourth proportional to 10,140.38, 13,999.63 and 6,740.14 is: 9,305.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,140.38 : 13,999.63 = 6,740.14 : x
  2. Step 2: Convert to fraction form
    10,140.38/13,999.63 = 6,740.14/x
  3. Step 3: Cross multiply
    10,140.38x = 13,999.63 × 6,740.14
  4. Step 4: Simplify right side
    10,140.38x = 94,359,466.15
  5. Step 5: Solve for x
    x = 94,359,466.15/10,140.38
  6. Step 6: Final answer
    x = 9,305.32

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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.