Home / 12,944.20-19,430.70-8,019.40

Finding the Fourth Proportional to 12,944.20, 19,430.70 and 8,019.40

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Solution

The fourth proportional to 12,944.20, 19,430.70 and 8,019.40 is: 12,038.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,944.20 : 19,430.70 = 8,019.40 : x
  2. Step 2: Convert to fraction form
    12,944.20/19,430.70 = 8,019.40/x
  3. Step 3: Cross multiply
    12,944.20x = 19,430.70 × 8,019.40
  4. Step 4: Simplify right side
    12,944.20x = 155,822,555.58
  5. Step 5: Solve for x
    x = 155,822,555.58/12,944.20
  6. Step 6: Final answer
    x = 12,038.02

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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.