Home / 28,210.58-38,920.18-16,880.34

Finding the Fourth Proportional to 28,210.58, 38,920.18 and 16,880.34

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Solution

The fourth proportional to 28,210.58, 38,920.18 and 16,880.34 is: 23,288.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,210.58 : 38,920.18 = 16,880.34 : x
  2. Step 2: Convert to fraction form
    28,210.58/38,920.18 = 16,880.34/x
  3. Step 3: Cross multiply
    28,210.58x = 38,920.18 × 16,880.34
  4. Step 4: Simplify right side
    28,210.58x = 656,985,871.26
  5. Step 5: Solve for x
    x = 656,985,871.26/28,210.58
  6. Step 6: Final answer
    x = 23,288.63

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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.