Home / 21,308,040.80-31,962,061.20-7,124,616.80

Finding the Fourth Proportional to 21,308,040.80, 31,962,061.20 and 7,124,616.80

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Solution

The fourth proportional to 21,308,040.80, 31,962,061.20 and 7,124,616.80 is: 10,686,925.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,308,040.80 : 31,962,061.20 = 7,124,616.80 : x
  2. Step 2: Convert to fraction form
    21,308,040.80/31,962,061.20 = 7,124,616.80/x
  3. Step 3: Cross multiply
    21,308,040.80x = 31,962,061.20 × 7,124,616.80
  4. Step 4: Simplify right side
    21,308,040.80x = 227,717,438,188,148.16
  5. Step 5: Solve for x
    x = 227,717,438,188,148.16/21,308,040.80
  6. Step 6: Final answer
    x = 10,686,925.20

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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.