Home / 28,366.95-39,143.00-16,428.63

Finding the Fourth Proportional to 28,366.95, 39,143.00 and 16,428.63

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Solution

The fourth proportional to 28,366.95, 39,143.00 and 16,428.63 is: 22,669.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,366.95 : 39,143.00 = 16,428.63 : x
  2. Step 2: Convert to fraction form
    28,366.95/39,143.00 = 16,428.63/x
  3. Step 3: Cross multiply
    28,366.95x = 39,143.00 × 16,428.63
  4. Step 4: Simplify right side
    28,366.95x = 643,065,781.95
  5. Step 5: Solve for x
    x = 643,065,781.95/28,366.95
  6. Step 6: Final answer
    x = 22,669.54

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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.