Home / 28,140.61-38,836.37-17,531.81

Finding the Fourth Proportional to 28,140.61, 38,836.37 and 17,531.81

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Solution

The fourth proportional to 28,140.61, 38,836.37 and 17,531.81 is: 24,195.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,140.61 : 38,836.37 = 17,531.81 : x
  2. Step 2: Convert to fraction form
    28,140.61/38,836.37 = 17,531.81/x
  3. Step 3: Cross multiply
    28,140.61x = 38,836.37 × 17,531.81
  4. Step 4: Simplify right side
    28,140.61x = 680,871,859.93
  5. Step 5: Solve for x
    x = 680,871,859.93/28,140.61
  6. Step 6: Final answer
    x = 24,195.35

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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.