Home / 28,139.72-38,794.81-18,050.64

Finding the Fourth Proportional to 28,139.72, 38,794.81 and 18,050.64

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Solution

The fourth proportional to 28,139.72, 38,794.81 and 18,050.64 is: 24,885.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,139.72 : 38,794.81 = 18,050.64 : x
  2. Step 2: Convert to fraction form
    28,139.72/38,794.81 = 18,050.64/x
  3. Step 3: Cross multiply
    28,139.72x = 38,794.81 × 18,050.64
  4. Step 4: Simplify right side
    28,139.72x = 700,271,149.18
  5. Step 5: Solve for x
    x = 700,271,149.18/28,139.72
  6. Step 6: Final answer
    x = 24,885.51

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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.