Home / 21,060,419.40-31,590,629.10-10,961,728.20

Finding the Fourth Proportional to 21,060,419.40, 31,590,629.10 and 10,961,728.20

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Solution

The fourth proportional to 21,060,419.40, 31,590,629.10 and 10,961,728.20 is: 16,442,592.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,060,419.40 : 31,590,629.10 = 10,961,728.20 : x
  2. Step 2: Convert to fraction form
    21,060,419.40/31,590,629.10 = 10,961,728.20/x
  3. Step 3: Cross multiply
    21,060,419.40x = 31,590,629.10 × 10,961,728.20
  4. Step 4: Simplify right side
    21,060,419.40x = 346,287,889,861,210.62
  5. Step 5: Solve for x
    x = 346,287,889,861,210.62/21,060,419.40
  6. Step 6: Final answer
    x = 16,442,592.30

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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.