Home / 10,708.40-16,051.80-4,869.20

Finding the Fourth Proportional to 10,708.40, 16,051.80 and 4,869.20

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Solution

The fourth proportional to 10,708.40, 16,051.80 and 4,869.20 is: 7,298.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,708.40 : 16,051.80 = 4,869.20 : x
  2. Step 2: Convert to fraction form
    10,708.40/16,051.80 = 4,869.20/x
  3. Step 3: Cross multiply
    10,708.40x = 16,051.80 × 4,869.20
  4. Step 4: Simplify right side
    10,708.40x = 78,159,424.56
  5. Step 5: Solve for x
    x = 78,159,424.56/10,708.40
  6. Step 6: Final answer
    x = 7,298.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.