Home / 28,870.31-39,840.66-16,123.72

Finding the Fourth Proportional to 28,870.31, 39,840.66 and 16,123.72

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Solution

The fourth proportional to 28,870.31, 39,840.66 and 16,123.72 is: 22,250.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,870.31 : 39,840.66 = 16,123.72 : x
  2. Step 2: Convert to fraction form
    28,870.31/39,840.66 = 16,123.72/x
  3. Step 3: Cross multiply
    28,870.31x = 39,840.66 × 16,123.72
  4. Step 4: Simplify right side
    28,870.31x = 642,379,646.46
  5. Step 5: Solve for x
    x = 642,379,646.46/28,870.31
  6. Step 6: Final answer
    x = 22,250.53

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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.