Home / 28,411.42-39,207.75-15,664.81

Finding the Fourth Proportional to 28,411.42, 39,207.75 and 15,664.81

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Solution

The fourth proportional to 28,411.42, 39,207.75 and 15,664.81 is: 21,617.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,411.42 : 39,207.75 = 15,664.81 : x
  2. Step 2: Convert to fraction form
    28,411.42/39,207.75 = 15,664.81/x
  3. Step 3: Cross multiply
    28,411.42x = 39,207.75 × 15,664.81
  4. Step 4: Simplify right side
    28,411.42x = 614,181,954.28
  5. Step 5: Solve for x
    x = 614,181,954.28/28,411.42
  6. Step 6: Final answer
    x = 21,617.43

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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.