Home / 28,364.92-39,143.54-16,428.84

Finding the Fourth Proportional to 28,364.92, 39,143.54 and 16,428.84

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Solution

The fourth proportional to 28,364.92, 39,143.54 and 16,428.84 is: 22,671.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,364.92 : 39,143.54 = 16,428.84 : x
  2. Step 2: Convert to fraction form
    28,364.92/39,143.54 = 16,428.84/x
  3. Step 3: Cross multiply
    28,364.92x = 39,143.54 × 16,428.84
  4. Step 4: Simplify right side
    28,364.92x = 643,082,955.69
  5. Step 5: Solve for x
    x = 643,082,955.69/28,364.92
  6. Step 6: Final answer
    x = 22,671.77

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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.