Home / 10,709.40-16,053.30-4,870.20

Finding the Fourth Proportional to 10,709.40, 16,053.30 and 4,870.20

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Solution

The fourth proportional to 10,709.40, 16,053.30 and 4,870.20 is: 7,300.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,709.40 : 16,053.30 = 4,870.20 : x
  2. Step 2: Convert to fraction form
    10,709.40/16,053.30 = 4,870.20/x
  3. Step 3: Cross multiply
    10,709.40x = 16,053.30 × 4,870.20
  4. Step 4: Simplify right side
    10,709.40x = 78,182,781.66
  5. Step 5: Solve for x
    x = 78,182,781.66/10,709.40
  6. Step 6: Final answer
    x = 7,300.39

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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.