Home / 15,409.51-21,265.02-8,335.78

Finding the Fourth Proportional to 15,409.51, 21,265.02 and 8,335.78

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Solution

The fourth proportional to 15,409.51, 21,265.02 and 8,335.78 is: 11,503.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,409.51 : 21,265.02 = 8,335.78 : x
  2. Step 2: Convert to fraction form
    15,409.51/21,265.02 = 8,335.78/x
  3. Step 3: Cross multiply
    15,409.51x = 21,265.02 × 8,335.78
  4. Step 4: Simplify right side
    15,409.51x = 177,260,528.42
  5. Step 5: Solve for x
    x = 177,260,528.42/15,409.51
  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.