Home / 15,938.63-21,995.72-8,865.51

Finding the Fourth Proportional to 15,938.63, 21,995.72 and 8,865.51

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Solution

The fourth proportional to 15,938.63, 21,995.72 and 8,865.51 is: 12,234.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,938.63 : 21,995.72 = 8,865.51 : x
  2. Step 2: Convert to fraction form
    15,938.63/21,995.72 = 8,865.51/x
  3. Step 3: Cross multiply
    15,938.63x = 21,995.72 × 8,865.51
  4. Step 4: Simplify right side
    15,938.63x = 195,003,275.62
  5. Step 5: Solve for x
    x = 195,003,275.62/15,938.63
  6. Step 6: Final answer
    x = 12,234.63

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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.