Home / 20,500.19-28,274.54-15,465.23

Finding the Fourth Proportional to 20,500.19, 28,274.54 and 15,465.23

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Solution

The fourth proportional to 20,500.19, 28,274.54 and 15,465.23 is: 21,330.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,500.19 : 28,274.54 = 15,465.23 : x
  2. Step 2: Convert to fraction form
    20,500.19/28,274.54 = 15,465.23/x
  3. Step 3: Cross multiply
    20,500.19x = 28,274.54 × 15,465.23
  4. Step 4: Simplify right side
    20,500.19x = 437,272,045.55
  5. Step 5: Solve for x
    x = 437,272,045.55/20,500.19
  6. Step 6: Final answer
    x = 21,330.15

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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.