Home / 21,026.17-28,993.51-20,715.94

Finding the Fourth Proportional to 21,026.17, 28,993.51 and 20,715.94

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Solution

The fourth proportional to 21,026.17, 28,993.51 and 20,715.94 is: 28,565.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,026.17 : 28,993.51 = 20,715.94 : x
  2. Step 2: Convert to fraction form
    21,026.17/28,993.51 = 20,715.94/x
  3. Step 3: Cross multiply
    21,026.17x = 28,993.51 × 20,715.94
  4. Step 4: Simplify right side
    21,026.17x = 600,627,813.55
  5. Step 5: Solve for x
    x = 600,627,813.55/21,026.17
  6. Step 6: Final answer
    x = 28,565.73

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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.