Home / 28,722.60-39,637.10-16,783.55

Finding the Fourth Proportional to 28,722.60, 39,637.10 and 16,783.55

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Solution

The fourth proportional to 28,722.60, 39,637.10 and 16,783.55 is: 23,161.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,722.60 : 39,637.10 = 16,783.55 : x
  2. Step 2: Convert to fraction form
    28,722.60/39,637.10 = 16,783.55/x
  3. Step 3: Cross multiply
    28,722.60x = 39,637.10 × 16,783.55
  4. Step 4: Simplify right side
    28,722.60x = 665,251,370.67
  5. Step 5: Solve for x
    x = 665,251,370.67/28,722.60
  6. Step 6: Final answer
    x = 23,161.25

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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.