Home / 15,302.06-21,115.32-9,335.20

Finding the Fourth Proportional to 15,302.06, 21,115.32 and 9,335.20

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Solution

The fourth proportional to 15,302.06, 21,115.32 and 9,335.20 is: 12,881.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,302.06 : 21,115.32 = 9,335.20 : x
  2. Step 2: Convert to fraction form
    15,302.06/21,115.32 = 9,335.20/x
  3. Step 3: Cross multiply
    15,302.06x = 21,115.32 × 9,335.20
  4. Step 4: Simplify right side
    15,302.06x = 197,115,735.26
  5. Step 5: Solve for x
    x = 197,115,735.26/15,302.06
  6. Step 6: Final answer
    x = 12,881.65

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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.