Home / 20,730,117.20-31,095,175.80-19,890,309.20

Finding the Fourth Proportional to 20,730,117.20, 31,095,175.80 and 19,890,309.20

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Solution

The fourth proportional to 20,730,117.20, 31,095,175.80 and 19,890,309.20 is: 29,835,463.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730,117.20 : 31,095,175.80 = 19,890,309.20 : x
  2. Step 2: Convert to fraction form
    20,730,117.20/31,095,175.80 = 19,890,309.20/x
  3. Step 3: Cross multiply
    20,730,117.20x = 31,095,175.80 × 19,890,309.20
  4. Step 4: Simplify right side
    20,730,117.20x = 618,492,661,290,357.38
  5. Step 5: Solve for x
    x = 618,492,661,290,357.38/20,730,117.20
  6. Step 6: Final answer
    x = 29,835,463.80

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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.