Home / 47,086.68-70,639.74-13,807.80

Finding the Fourth Proportional to 47,086.68, 70,639.74 and 13,807.80

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Solution

The fourth proportional to 47,086.68, 70,639.74 and 13,807.80 is: 20,714.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,086.68 : 70,639.74 = 13,807.80 : x
  2. Step 2: Convert to fraction form
    47,086.68/70,639.74 = 13,807.80/x
  3. Step 3: Cross multiply
    47,086.68x = 70,639.74 × 13,807.80
  4. Step 4: Simplify right side
    47,086.68x = 975,379,401.97
  5. Step 5: Solve for x
    x = 975,379,401.97/47,086.68
  6. Step 6: Final answer
    x = 20,714.55

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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.