Home / 28,440.84-39,248.70-15,865.58

Finding the Fourth Proportional to 28,440.84, 39,248.70 and 15,865.58

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Solution

The fourth proportional to 28,440.84, 39,248.70 and 15,865.58 is: 21,894.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,440.84 : 39,248.70 = 15,865.58 : x
  2. Step 2: Convert to fraction form
    28,440.84/39,248.70 = 15,865.58/x
  3. Step 3: Cross multiply
    28,440.84x = 39,248.70 × 15,865.58
  4. Step 4: Simplify right side
    28,440.84x = 622,703,389.75
  5. Step 5: Solve for x
    x = 622,703,389.75/28,440.84
  6. Step 6: Final answer
    x = 21,894.69

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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.