Home / 21,008,005.20-31,512,007.80-10,369,054.80

Finding the Fourth Proportional to 21,008,005.20, 31,512,007.80 and 10,369,054.80

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Solution

The fourth proportional to 21,008,005.20, 31,512,007.80 and 10,369,054.80 is: 15,553,582.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,008,005.20 : 31,512,007.80 = 10,369,054.80 : x
  2. Step 2: Convert to fraction form
    21,008,005.20/31,512,007.80 = 10,369,054.80/x
  3. Step 3: Cross multiply
    21,008,005.20x = 31,512,007.80 × 10,369,054.80
  4. Step 4: Simplify right side
    21,008,005.20x = 326,749,735,736,227.50
  5. Step 5: Solve for x
    x = 326,749,735,736,227.50/21,008,005.20
  6. Step 6: Final answer
    x = 15,553,582.20

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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.