Home / 10,402.20-14,360.76-6,871.59

Finding the Fourth Proportional to 10,402.20, 14,360.76 and 6,871.59

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Solution

The fourth proportional to 10,402.20, 14,360.76 and 6,871.59 is: 9,486.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,402.20 : 14,360.76 = 6,871.59 : x
  2. Step 2: Convert to fraction form
    10,402.20/14,360.76 = 6,871.59/x
  3. Step 3: Cross multiply
    10,402.20x = 14,360.76 × 6,871.59
  4. Step 4: Simplify right side
    10,402.20x = 98,681,254.81
  5. Step 5: Solve for x
    x = 98,681,254.81/10,402.20
  6. Step 6: Final answer
    x = 9,486.58

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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.