Home / 15,409.32-21,264.80-8,335.76

Finding the Fourth Proportional to 15,409.32, 21,264.80 and 8,335.76

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Solution

The fourth proportional to 15,409.32, 21,264.80 and 8,335.76 is: 11,503.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,409.32 : 21,264.80 = 8,335.76 : x
  2. Step 2: Convert to fraction form
    15,409.32/21,264.80 = 8,335.76/x
  3. Step 3: Cross multiply
    15,409.32x = 21,264.80 × 8,335.76
  4. Step 4: Simplify right side
    15,409.32x = 177,258,269.25
  5. Step 5: Solve for x
    x = 177,258,269.25/15,409.32
  6. Step 6: Final answer
    x = 11,503.32

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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.