Home / 10,530,820.80-15,802,060-5,139,515.88

Finding the Fourth Proportional to 10,530,820.80, 15,802,060 and 5,139,515.88

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Solution

The fourth proportional to 10,530,820.80, 15,802,060 and 5,139,515.88 is: 7,712,118.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,530,820.80 : 15,802,060 = 5,139,515.88 : x
  2. Step 2: Convert to fraction form
    10,530,820.80/15,802,060 = 5,139,515.88/x
  3. Step 3: Cross multiply
    10,530,820.80x = 15,802,060 × 5,139,515.88
  4. Step 4: Simplify right side
    10,530,820.80x = 81,214,938,306,712.80
  5. Step 5: Solve for x
    x = 81,214,938,306,712.80/10,530,820.80
  6. Step 6: Final answer
    x = 7,712,118.54

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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.