Home / 28,870.12-39,838.50-16,122.31

Finding the Fourth Proportional to 28,870.12, 39,838.50 and 16,122.31

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Solution

The fourth proportional to 28,870.12, 39,838.50 and 16,122.31 is: 22,247.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,870.12 : 39,838.50 = 16,122.31 : x
  2. Step 2: Convert to fraction form
    28,870.12/39,838.50 = 16,122.31/x
  3. Step 3: Cross multiply
    28,870.12x = 39,838.50 × 16,122.31
  4. Step 4: Simplify right side
    28,870.12x = 642,288,746.53
  5. Step 5: Solve for x
    x = 642,288,746.53/28,870.12
  6. Step 6: Final answer
    x = 22,247.53

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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.