Home / 28,721.81-39,637.62-16,792.13

Finding the Fourth Proportional to 28,721.81, 39,637.62 and 16,792.13

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Solution

The fourth proportional to 28,721.81, 39,637.62 and 16,792.13 is: 23,174.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,721.81 : 39,637.62 = 16,792.13 : x
  2. Step 2: Convert to fraction form
    28,721.81/39,637.62 = 16,792.13/x
  3. Step 3: Cross multiply
    28,721.81x = 39,637.62 × 16,792.13
  4. Step 4: Simplify right side
    28,721.81x = 665,599,869.74
  5. Step 5: Solve for x
    x = 665,599,869.74/28,721.81
  6. Step 6: Final answer
    x = 23,174.03

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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.