Home / 47,140.40-70,710.56-13,860.74

Finding the Fourth Proportional to 47,140.40, 70,710.56 and 13,860.74

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Solution

The fourth proportional to 47,140.40, 70,710.56 and 13,860.74 is: 20,791.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,140.40 : 70,710.56 = 13,860.74 : x
  2. Step 2: Convert to fraction form
    47,140.40/70,710.56 = 13,860.74/x
  3. Step 3: Cross multiply
    47,140.40x = 70,710.56 × 13,860.74
  4. Step 4: Simplify right side
    47,140.40x = 980,100,333.86
  5. Step 5: Solve for x
    x = 980,100,333.86/47,140.40
  6. Step 6: Final answer
    x = 20,791.09

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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.