Home / 28,639.12-39,523.80-16,065.76

Finding the Fourth Proportional to 28,639.12, 39,523.80 and 16,065.76

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Solution

The fourth proportional to 28,639.12, 39,523.80 and 16,065.76 is: 22,171.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,639.12 : 39,523.80 = 16,065.76 : x
  2. Step 2: Convert to fraction form
    28,639.12/39,523.80 = 16,065.76/x
  3. Step 3: Cross multiply
    28,639.12x = 39,523.80 × 16,065.76
  4. Step 4: Simplify right side
    28,639.12x = 634,979,885.09
  5. Step 5: Solve for x
    x = 634,979,885.09/28,639.12
  6. Step 6: Final answer
    x = 22,171.77

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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.