Home / 15,671.52-21,612.80-10,947.68

Finding the Fourth Proportional to 15,671.52, 21,612.80 and 10,947.68

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Solution

The fourth proportional to 15,671.52, 21,612.80 and 10,947.68 is: 15,098.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,671.52 : 21,612.80 = 10,947.68 : x
  2. Step 2: Convert to fraction form
    15,671.52/21,612.80 = 10,947.68/x
  3. Step 3: Cross multiply
    15,671.52x = 21,612.80 × 10,947.68
  4. Step 4: Simplify right side
    15,671.52x = 236,610,018.30
  5. Step 5: Solve for x
    x = 236,610,018.30/15,671.52
  6. Step 6: Final answer
    x = 15,098.09

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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.