Home / 20,386,475.80-28,133,341.24-11,219,118.55

Finding the Fourth Proportional to 20,386,475.80, 28,133,341.24 and 11,219,118.55

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Solution

The fourth proportional to 20,386,475.80, 28,133,341.24 and 11,219,118.55 is: 15,482,386.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,386,475.80 : 28,133,341.24 = 11,219,118.55 : x
  2. Step 2: Convert to fraction form
    20,386,475.80/28,133,341.24 = 11,219,118.55/x
  3. Step 3: Cross multiply
    20,386,475.80x = 28,133,341.24 × 11,219,118.55
  4. Step 4: Simplify right side
    20,386,475.80x = 315,631,290,579,164
  5. Step 5: Solve for x
    x = 315,631,290,579,164/20,386,475.80
  6. Step 6: Final answer
    x = 15,482,386.15

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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.