Home / 15,371.37-21,212.27-8,657.66

Finding the Fourth Proportional to 15,371.37, 21,212.27 and 8,657.66

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Solution

The fourth proportional to 15,371.37, 21,212.27 and 8,657.66 is: 11,947.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,371.37 : 21,212.27 = 8,657.66 : x
  2. Step 2: Convert to fraction form
    15,371.37/21,212.27 = 8,657.66/x
  3. Step 3: Cross multiply
    15,371.37x = 21,212.27 × 8,657.66
  4. Step 4: Simplify right side
    15,371.37x = 183,648,621.49
  5. Step 5: Solve for x
    x = 183,648,621.49/15,371.37
  6. Step 6: Final answer
    x = 11,947.45

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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.