Home / 20,480,221.47-28,262,619.49-11,312,864.22

Finding the Fourth Proportional to 20,480,221.47, 28,262,619.49 and 11,312,864.22

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Solution

The fourth proportional to 20,480,221.47, 28,262,619.49 and 11,312,864.22 is: 15,611,705.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,480,221.47 : 28,262,619.49 = 11,312,864.22 : x
  2. Step 2: Convert to fraction form
    20,480,221.47/28,262,619.49 = 11,312,864.22/x
  3. Step 3: Cross multiply
    20,480,221.47x = 28,262,619.49 × 11,312,864.22
  4. Step 4: Simplify right side
    20,480,221.47x = 319,731,176,791,895.62
  5. Step 5: Solve for x
    x = 319,731,176,791,895.62/20,480,221.47
  6. Step 6: Final answer
    x = 15,611,705.04

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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.