Home / 20,736.02-28,616.12-11,304.57

Finding the Fourth Proportional to 20,736.02, 28,616.12 and 11,304.57

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Solution

The fourth proportional to 20,736.02, 28,616.12 and 11,304.57 is: 15,600.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736.02 : 28,616.12 = 11,304.57 : x
  2. Step 2: Convert to fraction form
    20,736.02/28,616.12 = 11,304.57/x
  3. Step 3: Cross multiply
    20,736.02x = 28,616.12 × 11,304.57
  4. Step 4: Simplify right side
    20,736.02x = 323,492,931.67
  5. Step 5: Solve for x
    x = 323,492,931.67/20,736.02
  6. Step 6: Final answer
    x = 15,600.53

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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.