Home / 28,905.66-39,888.72-16,330.68

Finding the Fourth Proportional to 28,905.66, 39,888.72 and 16,330.68

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Solution

The fourth proportional to 28,905.66, 39,888.72 and 16,330.68 is: 22,535.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,905.66 : 39,888.72 = 16,330.68 : x
  2. Step 2: Convert to fraction form
    28,905.66/39,888.72 = 16,330.68/x
  3. Step 3: Cross multiply
    28,905.66x = 39,888.72 × 16,330.68
  4. Step 4: Simplify right side
    28,905.66x = 651,409,921.93
  5. Step 5: Solve for x
    x = 651,409,921.93/28,905.66
  6. Step 6: Final answer
    x = 22,535.72

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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.