Home / 21,235,152.98-31,697,704.79-18,221,882.51

Finding the Fourth Proportional to 21,235,152.98, 31,697,704.79 and 18,221,882.51

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Solution

The fourth proportional to 21,235,152.98, 31,697,704.79 and 18,221,882.51 is: 27,199,797.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,235,152.98 : 31,697,704.79 = 18,221,882.51 : x
  2. Step 2: Convert to fraction form
    21,235,152.98/31,697,704.79 = 18,221,882.51/x
  3. Step 3: Cross multiply
    21,235,152.98x = 31,697,704.79 × 18,221,882.51
  4. Step 4: Simplify right side
    21,235,152.98x = 577,591,852,270,446.25
  5. Step 5: Solve for x
    x = 577,591,852,270,446.25/21,235,152.98
  6. Step 6: Final answer
    x = 27,199,797.10

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.