Home / 28,903.12-39,886.79-16,156.55

Finding the Fourth Proportional to 28,903.12, 39,886.79 and 16,156.55

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Solution

The fourth proportional to 28,903.12, 39,886.79 and 16,156.55 is: 22,296.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,903.12 : 39,886.79 = 16,156.55 : x
  2. Step 2: Convert to fraction form
    28,903.12/39,886.79 = 16,156.55/x
  3. Step 3: Cross multiply
    28,903.12x = 39,886.79 × 16,156.55
  4. Step 4: Simplify right side
    28,903.12x = 644,432,916.97
  5. Step 5: Solve for x
    x = 644,432,916.97/28,903.12
  6. Step 6: Final answer
    x = 22,296.31

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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.