Home / 47,319.47-70,979.20-12,259.13

Finding the Fourth Proportional to 47,319.47, 70,979.20 and 12,259.13

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Solution

The fourth proportional to 47,319.47, 70,979.20 and 12,259.13 is: 18,388.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,319.47 : 70,979.20 = 12,259.13 : x
  2. Step 2: Convert to fraction form
    47,319.47/70,979.20 = 12,259.13/x
  3. Step 3: Cross multiply
    47,319.47x = 70,979.20 × 12,259.13
  4. Step 4: Simplify right side
    47,319.47x = 870,143,240.10
  5. Step 5: Solve for x
    x = 870,143,240.10/47,319.47
  6. Step 6: Final answer
    x = 18,388.69

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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.