Home / 28,440.16-39,248.63-15,864.91

Finding the Fourth Proportional to 28,440.16, 39,248.63 and 15,864.91

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Solution

The fourth proportional to 28,440.16, 39,248.63 and 15,864.91 is: 21,894.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,440.16 : 39,248.63 = 15,864.91 : x
  2. Step 2: Convert to fraction form
    28,440.16/39,248.63 = 15,864.91/x
  3. Step 3: Cross multiply
    28,440.16x = 39,248.63 × 15,864.91
  4. Step 4: Simplify right side
    28,440.16x = 622,675,982.57
  5. Step 5: Solve for x
    x = 622,675,982.57/28,440.16
  6. Step 6: Final answer
    x = 21,894.25

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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.