Home / 15,360.17-21,196.80-8,645.58

Finding the Fourth Proportional to 15,360.17, 21,196.80 and 8,645.58

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Solution

The fourth proportional to 15,360.17, 21,196.80 and 8,645.58 is: 11,930.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,360.17 : 21,196.80 = 8,645.58 : x
  2. Step 2: Convert to fraction form
    15,360.17/21,196.80 = 8,645.58/x
  3. Step 3: Cross multiply
    15,360.17x = 21,196.80 × 8,645.58
  4. Step 4: Simplify right side
    15,360.17x = 183,258,630.14
  5. Step 5: Solve for x
    x = 183,258,630.14/15,360.17
  6. Step 6: Final answer
    x = 11,930.77

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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.