Home / 10,126.40-13,971.12-5,649.32

Finding the Fourth Proportional to 10,126.40, 13,971.12 and 5,649.32

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Solution

The fourth proportional to 10,126.40, 13,971.12 and 5,649.32 is: 7,794.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,126.40 : 13,971.12 = 5,649.32 : x
  2. Step 2: Convert to fraction form
    10,126.40/13,971.12 = 5,649.32/x
  3. Step 3: Cross multiply
    10,126.40x = 13,971.12 × 5,649.32
  4. Step 4: Simplify right side
    10,126.40x = 78,927,327.64
  5. Step 5: Solve for x
    x = 78,927,327.64/10,126.40
  6. Step 6: Final answer
    x = 7,794.21

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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.