Home / 15,140.72-20,876.32-10,362.97

Finding the Fourth Proportional to 15,140.72, 20,876.32 and 10,362.97

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Solution

The fourth proportional to 15,140.72, 20,876.32 and 10,362.97 is: 14,288.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,140.72 : 20,876.32 = 10,362.97 : x
  2. Step 2: Convert to fraction form
    15,140.72/20,876.32 = 10,362.97/x
  3. Step 3: Cross multiply
    15,140.72x = 20,876.32 × 10,362.97
  4. Step 4: Simplify right side
    15,140.72x = 216,340,638.63
  5. Step 5: Solve for x
    x = 216,340,638.63/15,140.72
  6. Step 6: Final answer
    x = 14,288.66

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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.