Home / 21,047,334.26-31,376,446.84-20,715,655.16

Finding the Fourth Proportional to 21,047,334.26, 31,376,446.84 and 20,715,655.16

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Solution

The fourth proportional to 21,047,334.26, 31,376,446.84 and 20,715,655.16 is: 30,881,994.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,047,334.26 : 31,376,446.84 = 20,715,655.16 : x
  2. Step 2: Convert to fraction form
    21,047,334.26/31,376,446.84 = 20,715,655.16/x
  3. Step 3: Cross multiply
    21,047,334.26x = 31,376,446.84 × 20,715,655.16
  4. Step 4: Simplify right side
    21,047,334.26x = 649,983,652,883,511.75
  5. Step 5: Solve for x
    x = 649,983,652,883,511.75/21,047,334.26
  6. Step 6: Final answer
    x = 30,881,994.12

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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.