Home / 15,120.48-20,866.32-10,396.56

Finding the Fourth Proportional to 15,120.48, 20,866.32 and 10,396.56

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Solution

The fourth proportional to 15,120.48, 20,866.32 and 10,396.56 is: 14,347.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,120.48 : 20,866.32 = 10,396.56 : x
  2. Step 2: Convert to fraction form
    15,120.48/20,866.32 = 10,396.56/x
  3. Step 3: Cross multiply
    15,120.48x = 20,866.32 × 10,396.56
  4. Step 4: Simplify right side
    15,120.48x = 216,937,947.86
  5. Step 5: Solve for x
    x = 216,937,947.86/15,120.48
  6. Step 6: Final answer
    x = 14,347.29

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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.