Home / 28,366.14-39,143.61-16,428.63

Finding the Fourth Proportional to 28,366.14, 39,143.61 and 16,428.63

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Solution

The fourth proportional to 28,366.14, 39,143.61 and 16,428.63 is: 22,670.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,366.14 : 39,143.61 = 16,428.63 : x
  2. Step 2: Convert to fraction form
    28,366.14/39,143.61 = 16,428.63/x
  3. Step 3: Cross multiply
    28,366.14x = 39,143.61 × 16,428.63
  4. Step 4: Simplify right side
    28,366.14x = 643,075,885.55
  5. Step 5: Solve for x
    x = 643,075,885.55/28,366.14
  6. Step 6: Final answer
    x = 22,670.55

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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.