Home / 21,107,680.60-31,661,520.90-19,931,949.40

Finding the Fourth Proportional to 21,107,680.60, 31,661,520.90 and 19,931,949.40

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Solution

The fourth proportional to 21,107,680.60, 31,661,520.90 and 19,931,949.40 is: 29,897,924.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,107,680.60 : 31,661,520.90 = 19,931,949.40 : x
  2. Step 2: Convert to fraction form
    21,107,680.60/31,661,520.90 = 19,931,949.40/x
  3. Step 3: Cross multiply
    21,107,680.60x = 31,661,520.90 × 19,931,949.40
  4. Step 4: Simplify right side
    21,107,680.60x = 631,075,832,505,842.38
  5. Step 5: Solve for x
    x = 631,075,832,505,842.38/21,107,680.60
  6. Step 6: Final answer
    x = 29,897,924.10

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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.