Home / 20,405,180.52-28,162,210.52-15,502,334.76

Finding the Fourth Proportional to 20,405,180.52, 28,162,210.52 and 15,502,334.76

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Solution

The fourth proportional to 20,405,180.52, 28,162,210.52 and 15,502,334.76 is: 21,395,547.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,405,180.52 : 28,162,210.52 = 15,502,334.76 : x
  2. Step 2: Convert to fraction form
    20,405,180.52/28,162,210.52 = 15,502,334.76/x
  3. Step 3: Cross multiply
    20,405,180.52x = 28,162,210.52 × 15,502,334.76
  4. Step 4: Simplify right side
    20,405,180.52x = 436,580,015,062,633.69
  5. Step 5: Solve for x
    x = 436,580,015,062,633.69/20,405,180.52
  6. Step 6: Final answer
    x = 21,395,547.79

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1.5x scale

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.