Home / 18,900.54-28,290.18-12,560.87

Finding the Fourth Proportional to 18,900.54, 28,290.18 and 12,560.87

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Solution

The fourth proportional to 18,900.54, 28,290.18 and 12,560.87 is: 18,801.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,900.54 : 28,290.18 = 12,560.87 : x
  2. Step 2: Convert to fraction form
    18,900.54/28,290.18 = 12,560.87/x
  3. Step 3: Cross multiply
    18,900.54x = 28,290.18 × 12,560.87
  4. Step 4: Simplify right side
    18,900.54x = 355,349,320.43
  5. Step 5: Solve for x
    x = 355,349,320.43/18,900.54
  6. Step 6: Final answer
    x = 18,801.01

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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.