Home / 20,657,729.80-30,960,022.65-12,562,111.90

Finding the Fourth Proportional to 20,657,729.80, 30,960,022.65 and 12,562,111.90

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Solution

The fourth proportional to 20,657,729.80, 30,960,022.65 and 12,562,111.90 is: 18,827,009.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,657,729.80 : 30,960,022.65 = 12,562,111.90 : x
  2. Step 2: Convert to fraction form
    20,657,729.80/30,960,022.65 = 12,562,111.90/x
  3. Step 3: Cross multiply
    20,657,729.80x = 30,960,022.65 × 12,562,111.90
  4. Step 4: Simplify right side
    20,657,729.80x = 388,923,268,955,834.50
  5. Step 5: Solve for x
    x = 388,923,268,955,834.50/20,657,729.80
  6. Step 6: Final answer
    x = 18,827,009.20

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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.