Home / 28,863.35-39,840.50-16,931.51

Finding the Fourth Proportional to 28,863.35, 39,840.50 and 16,931.51

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Solution

The fourth proportional to 28,863.35, 39,840.50 and 16,931.51 is: 23,370.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,863.35 : 39,840.50 = 16,931.51 : x
  2. Step 2: Convert to fraction form
    28,863.35/39,840.50 = 16,931.51/x
  3. Step 3: Cross multiply
    28,863.35x = 39,840.50 × 16,931.51
  4. Step 4: Simplify right side
    28,863.35x = 674,559,824.16
  5. Step 5: Solve for x
    x = 674,559,824.16/28,863.35
  6. Step 6: Final answer
    x = 23,370.81

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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.