Home / 12,389.40-18,584.10-4,070.70

Finding the Fourth Proportional to 12,389.40, 18,584.10 and 4,070.70

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Solution

The fourth proportional to 12,389.40, 18,584.10 and 4,070.70 is: 6,106.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,389.40 : 18,584.10 = 4,070.70 : x
  2. Step 2: Convert to fraction form
    12,389.40/18,584.10 = 4,070.70/x
  3. Step 3: Cross multiply
    12,389.40x = 18,584.10 × 4,070.70
  4. Step 4: Simplify right side
    12,389.40x = 75,650,295.87
  5. Step 5: Solve for x
    x = 75,650,295.87/12,389.40
  6. Step 6: Final answer
    x = 6,106.05

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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.