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Finding the Fourth Proportional to 8,615,347.20, 12,923,020.80 and 7,021,024.20

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Solution

The fourth proportional to 8,615,347.20, 12,923,020.80 and 7,021,024.20 is: 10,531,536.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,615,347.20 : 12,923,020.80 = 7,021,024.20 : x
  2. Step 2: Convert to fraction form
    8,615,347.20/12,923,020.80 = 7,021,024.20/x
  3. Step 3: Cross multiply
    8,615,347.20x = 12,923,020.80 × 7,021,024.20
  4. Step 4: Simplify right side
    8,615,347.20x = 90,732,841,773,903.38
  5. Step 5: Solve for x
    x = 90,732,841,773,903.38/8,615,347.20
  6. Step 6: Final answer
    x = 10,531,536.30

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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.