Home / 21,018,507.70-31,521,856.65-6,645,981.10

Finding the Fourth Proportional to 21,018,507.70, 31,521,856.65 and 6,645,981.10

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Solution

The fourth proportional to 21,018,507.70, 31,521,856.65 and 6,645,981.10 is: 9,967,104.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,018,507.70 : 31,521,856.65 = 6,645,981.10 : x
  2. Step 2: Convert to fraction form
    21,018,507.70/31,521,856.65 = 6,645,981.10/x
  3. Step 3: Cross multiply
    21,018,507.70x = 31,521,856.65 × 6,645,981.10
  4. Step 4: Simplify right side
    21,018,507.70x = 209,493,663,532,809.28
  5. Step 5: Solve for x
    x = 209,493,663,532,809.28/21,018,507.70
  6. Step 6: Final answer
    x = 9,967,104.54

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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.