Home / 21,005,337.80-31,508,006.70-17,870,054.60

Finding the Fourth Proportional to 21,005,337.80, 31,508,006.70 and 17,870,054.60

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Solution

The fourth proportional to 21,005,337.80, 31,508,006.70 and 17,870,054.60 is: 26,805,081.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,005,337.80 : 31,508,006.70 = 17,870,054.60 : x
  2. Step 2: Convert to fraction form
    21,005,337.80/31,508,006.70 = 17,870,054.60/x
  3. Step 3: Cross multiply
    21,005,337.80x = 31,508,006.70 × 17,870,054.60
  4. Step 4: Simplify right side
    21,005,337.80x = 563,049,800,066,165.88
  5. Step 5: Solve for x
    x = 563,049,800,066,165.88/21,005,337.80
  6. Step 6: Final answer
    x = 26,805,081.90

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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.