Home / 21,499,320.80-32,248,981.20-19,857,029.60

Finding the Fourth Proportional to 21,499,320.80, 32,248,981.20 and 19,857,029.60

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Solution

The fourth proportional to 21,499,320.80, 32,248,981.20 and 19,857,029.60 is: 29,785,544.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,499,320.80 : 32,248,981.20 = 19,857,029.60 : x
  2. Step 2: Convert to fraction form
    21,499,320.80/32,248,981.20 = 19,857,029.60/x
  3. Step 3: Cross multiply
    21,499,320.80x = 32,248,981.20 × 19,857,029.60
  4. Step 4: Simplify right side
    21,499,320.80x = 640,368,974,258,243.50
  5. Step 5: Solve for x
    x = 640,368,974,258,243.50/21,499,320.80
  6. Step 6: Final answer
    x = 29,785,544.40

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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.