Home / 20,364.24-28,035-18,264.72

Finding the Fourth Proportional to 20,364.24, 28,035 and 18,264.72

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Solution

The fourth proportional to 20,364.24, 28,035 and 18,264.72 is: 25,144.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,364.24 : 28,035 = 18,264.72 : x
  2. Step 2: Convert to fraction form
    20,364.24/28,035 = 18,264.72/x
  3. Step 3: Cross multiply
    20,364.24x = 28,035 × 18,264.72
  4. Step 4: Simplify right side
    20,364.24x = 512,051,425.20
  5. Step 5: Solve for x
    x = 512,051,425.20/20,364.24
  6. Step 6: Final answer
    x = 25,144.64

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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.