Home / 20,911,006.80-31,368,065.40-7,446,085.20

Finding the Fourth Proportional to 20,911,006.80, 31,368,065.40 and 7,446,085.20

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Solution

The fourth proportional to 20,911,006.80, 31,368,065.40 and 7,446,085.20 is: 11,169,681.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,911,006.80 : 31,368,065.40 = 7,446,085.20 : x
  2. Step 2: Convert to fraction form
    20,911,006.80/31,368,065.40 = 7,446,085.20/x
  3. Step 3: Cross multiply
    20,911,006.80x = 31,368,065.40 × 7,446,085.20
  4. Step 4: Simplify right side
    20,911,006.80x = 233,569,287,527,572.06
  5. Step 5: Solve for x
    x = 233,569,287,527,572.06/20,911,006.80
  6. Step 6: Final answer
    x = 11,169,681.58

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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.