Home / 28,378.79-42,529.91-14,348.71

Finding the Fourth Proportional to 28,378.79, 42,529.91 and 14,348.71

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Solution

The fourth proportional to 28,378.79, 42,529.91 and 14,348.71 is: 21,503.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,378.79 : 42,529.91 = 14,348.71 : x
  2. Step 2: Convert to fraction form
    28,378.79/42,529.91 = 14,348.71/x
  3. Step 3: Cross multiply
    28,378.79x = 42,529.91 × 14,348.71
  4. Step 4: Simplify right side
    28,378.79x = 610,249,166.85
  5. Step 5: Solve for x
    x = 610,249,166.85/28,378.79
  6. Step 6: Final answer
    x = 21,503.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.