Home / 20,465.24-28,240.02-11,512.53

Finding the Fourth Proportional to 20,465.24, 28,240.02 and 11,512.53

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Solution

The fourth proportional to 20,465.24, 28,240.02 and 11,512.53 is: 15,886.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,465.24 : 28,240.02 = 11,512.53 : x
  2. Step 2: Convert to fraction form
    20,465.24/28,240.02 = 11,512.53/x
  3. Step 3: Cross multiply
    20,465.24x = 28,240.02 × 11,512.53
  4. Step 4: Simplify right side
    20,465.24x = 325,114,077.45
  5. Step 5: Solve for x
    x = 325,114,077.45/20,465.24
  6. Step 6: Final answer
    x = 15,886.16

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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.