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Finding the Fourth Proportional to 15,652.80, 21,606.75 and 10,354.86

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Solution

The fourth proportional to 15,652.80, 21,606.75 and 10,354.86 is: 14,293.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,652.80 : 21,606.75 = 10,354.86 : x
  2. Step 2: Convert to fraction form
    15,652.80/21,606.75 = 10,354.86/x
  3. Step 3: Cross multiply
    15,652.80x = 21,606.75 × 10,354.86
  4. Step 4: Simplify right side
    15,652.80x = 223,734,871.31
  5. Step 5: Solve for x
    x = 223,734,871.31/15,652.80
  6. Step 6: Final answer
    x = 14,293.60

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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.