Home / 28,155,976.13-38,855,247.06-15,278,920.13

Finding the Fourth Proportional to 28,155,976.13, 38,855,247.06 and 15,278,920.13

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Solution

The fourth proportional to 28,155,976.13, 38,855,247.06 and 15,278,920.13 is: 21,084,909.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,155,976.13 : 38,855,247.06 = 15,278,920.13 : x
  2. Step 2: Convert to fraction form
    28,155,976.13/38,855,247.06 = 15,278,920.13/x
  3. Step 3: Cross multiply
    28,155,976.13x = 38,855,247.06 × 15,278,920.13
  4. Step 4: Simplify right side
    28,155,976.13x = 593,666,216,266,881.12
  5. Step 5: Solve for x
    x = 593,666,216,266,881.12/28,155,976.13
  6. Step 6: Final answer
    x = 21,084,909.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.