Home / 28,368.32-39,148.80-16,428.80

Finding the Fourth Proportional to 28,368.32, 39,148.80 and 16,428.80

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Solution

The fourth proportional to 28,368.32, 39,148.80 and 16,428.80 is: 22,672.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,368.32 : 39,148.80 = 16,428.80 : x
  2. Step 2: Convert to fraction form
    28,368.32/39,148.80 = 16,428.80/x
  3. Step 3: Cross multiply
    28,368.32x = 39,148.80 × 16,428.80
  4. Step 4: Simplify right side
    28,368.32x = 643,167,805.44
  5. Step 5: Solve for x
    x = 643,167,805.44/28,368.32
  6. Step 6: Final answer
    x = 22,672.04

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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.