Home / 15,152.15-20,908.58-11,175.45

Finding the Fourth Proportional to 15,152.15, 20,908.58 and 11,175.45

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Solution

The fourth proportional to 15,152.15, 20,908.58 and 11,175.45 is: 15,421.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,152.15 : 20,908.58 = 11,175.45 : x
  2. Step 2: Convert to fraction form
    15,152.15/20,908.58 = 11,175.45/x
  3. Step 3: Cross multiply
    15,152.15x = 20,908.58 × 11,175.45
  4. Step 4: Simplify right side
    15,152.15x = 233,662,734.48
  5. Step 5: Solve for x
    x = 233,662,734.48/15,152.15
  6. Step 6: Final answer
    x = 15,421.10

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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.