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Finding the Fourth Proportional to 19,912.60, 29,868.90 and 10,053.40

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Solution

The fourth proportional to 19,912.60, 29,868.90 and 10,053.40 is: 15,080.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,912.60 : 29,868.90 = 10,053.40 : x
  2. Step 2: Convert to fraction form
    19,912.60/29,868.90 = 10,053.40/x
  3. Step 3: Cross multiply
    19,912.60x = 29,868.90 × 10,053.40
  4. Step 4: Simplify right side
    19,912.60x = 300,283,999.26
  5. Step 5: Solve for x
    x = 300,283,999.26/19,912.60
  6. Step 6: Final answer
    x = 15,080.10

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1.5x scale

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.