Home / 10,515,765.20-15,779,868.60-7,668,712.40

Finding the Fourth Proportional to 10,515,765.20, 15,779,868.60 and 7,668,712.40

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Solution

The fourth proportional to 10,515,765.20, 15,779,868.60 and 7,668,712.40 is: 11,507,605.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,515,765.20 : 15,779,868.60 = 7,668,712.40 : x
  2. Step 2: Convert to fraction form
    10,515,765.20/15,779,868.60 = 7,668,712.40/x
  3. Step 3: Cross multiply
    10,515,765.20x = 15,779,868.60 × 7,668,712.40
  4. Step 4: Simplify right side
    10,515,765.20x = 121,011,274,003,190.64
  5. Step 5: Solve for x
    x = 121,011,274,003,190.64/10,515,765.20
  6. Step 6: Final answer
    x = 11,507,605.17

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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.