Home / 15,671.68-21,628.82-9,705.22

Finding the Fourth Proportional to 15,671.68, 21,628.82 and 9,705.22

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Solution

The fourth proportional to 15,671.68, 21,628.82 and 9,705.22 is: 13,394.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,671.68 : 21,628.82 = 9,705.22 : x
  2. Step 2: Convert to fraction form
    15,671.68/21,628.82 = 9,705.22/x
  3. Step 3: Cross multiply
    15,671.68x = 21,628.82 × 9,705.22
  4. Step 4: Simplify right side
    15,671.68x = 209,912,426.63
  5. Step 5: Solve for x
    x = 209,912,426.63/15,671.68
  6. Step 6: Final answer
    x = 13,394.38

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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.