Home / 15,429.84-21,293.09-8,717.64

Finding the Fourth Proportional to 15,429.84, 21,293.09 and 8,717.64

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Solution

The fourth proportional to 15,429.84, 21,293.09 and 8,717.64 is: 12,030.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,429.84 : 21,293.09 = 8,717.64 : x
  2. Step 2: Convert to fraction form
    15,429.84/21,293.09 = 8,717.64/x
  3. Step 3: Cross multiply
    15,429.84x = 21,293.09 × 8,717.64
  4. Step 4: Simplify right side
    15,429.84x = 185,625,449.52
  5. Step 5: Solve for x
    x = 185,625,449.52/15,429.84
  6. Step 6: Final answer
    x = 12,030.29

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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.