Home / 21,177,966.10-31,780,387.40-9,047,520.79

Finding the Fourth Proportional to 21,177,966.10, 31,780,387.40 and 9,047,520.79

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Solution

The fourth proportional to 21,177,966.10, 31,780,387.40 and 9,047,520.79 is: 13,577,022.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,177,966.10 : 31,780,387.40 = 9,047,520.79 : x
  2. Step 2: Convert to fraction form
    21,177,966.10/31,780,387.40 = 9,047,520.79/x
  3. Step 3: Cross multiply
    21,177,966.10x = 31,780,387.40 × 9,047,520.79
  4. Step 4: Simplify right side
    21,177,966.10x = 287,533,715,556,852.12
  5. Step 5: Solve for x
    x = 287,533,715,556,852.12/21,177,966.10
  6. Step 6: Final answer
    x = 13,577,022.19

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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.