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Finding the Fourth Proportional to 18,862.34, 28,293.48 and 5,011.34

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Solution

The fourth proportional to 18,862.34, 28,293.48 and 5,011.34 is: 7,517.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,862.34 : 28,293.48 = 5,011.34 : x
  2. Step 2: Convert to fraction form
    18,862.34/28,293.48 = 5,011.34/x
  3. Step 3: Cross multiply
    18,862.34x = 28,293.48 × 5,011.34
  4. Step 4: Simplify right side
    18,862.34x = 141,788,106.60
  5. Step 5: Solve for x
    x = 141,788,106.60/18,862.34
  6. Step 6: Final answer
    x = 7,517.00

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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.