Home / 30,124.78-45,176.77-12,350.40

Finding the Fourth Proportional to 30,124.78, 45,176.77 and 12,350.40

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Solution

The fourth proportional to 30,124.78, 45,176.77 and 12,350.40 is: 18,521.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,124.78 : 45,176.77 = 12,350.40 : x
  2. Step 2: Convert to fraction form
    30,124.78/45,176.77 = 12,350.40/x
  3. Step 3: Cross multiply
    30,124.78x = 45,176.77 × 12,350.40
  4. Step 4: Simplify right side
    30,124.78x = 557,950,892.57
  5. Step 5: Solve for x
    x = 557,950,892.57/30,124.78
  6. Step 6: Final answer
    x = 18,521.33

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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.