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Finding the Fourth Proportional to 15,754.90, 21,741.58 and 8,948.87

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Solution

The fourth proportional to 15,754.90, 21,741.58 and 8,948.87 is: 12,349.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,754.90 : 21,741.58 = 8,948.87 : x
  2. Step 2: Convert to fraction form
    15,754.90/21,741.58 = 8,948.87/x
  3. Step 3: Cross multiply
    15,754.90x = 21,741.58 × 8,948.87
  4. Step 4: Simplify right side
    15,754.90x = 194,562,528.27
  5. Step 5: Solve for x
    x = 194,562,528.27/15,754.90
  6. Step 6: Final answer
    x = 12,349.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.