Home / 20,671.84-31,011.60-9,571.20

Finding the Fourth Proportional to 20,671.84, 31,011.60 and 9,571.20

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Solution

The fourth proportional to 20,671.84, 31,011.60 and 9,571.20 is: 14,358.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,671.84 : 31,011.60 = 9,571.20 : x
  2. Step 2: Convert to fraction form
    20,671.84/31,011.60 = 9,571.20/x
  3. Step 3: Cross multiply
    20,671.84x = 31,011.60 × 9,571.20
  4. Step 4: Simplify right side
    20,671.84x = 296,818,225.92
  5. Step 5: Solve for x
    x = 296,818,225.92/20,671.84
  6. Step 6: Final answer
    x = 14,358.58

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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.