Home / 16,390.20-24,560.10-12,210.60

Finding the Fourth Proportional to 16,390.20, 24,560.10 and 12,210.60

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Solution

The fourth proportional to 16,390.20, 24,560.10 and 12,210.60 is: 18,297.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,390.20 : 24,560.10 = 12,210.60 : x
  2. Step 2: Convert to fraction form
    16,390.20/24,560.10 = 12,210.60/x
  3. Step 3: Cross multiply
    16,390.20x = 24,560.10 × 12,210.60
  4. Step 4: Simplify right side
    16,390.20x = 299,893,557.06
  5. Step 5: Solve for x
    x = 299,893,557.06/16,390.20
  6. Step 6: Final answer
    x = 18,297.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.