Home / 20,587.06-30,880.53-7,439.41

Finding the Fourth Proportional to 20,587.06, 30,880.53 and 7,439.41

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Solution

The fourth proportional to 20,587.06, 30,880.53 and 7,439.41 is: 11,159.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,587.06 : 30,880.53 = 7,439.41 : x
  2. Step 2: Convert to fraction form
    20,587.06/30,880.53 = 7,439.41/x
  3. Step 3: Cross multiply
    20,587.06x = 30,880.53 × 7,439.41
  4. Step 4: Simplify right side
    20,587.06x = 229,732,923.69
  5. Step 5: Solve for x
    x = 229,732,923.69/20,587.06
  6. Step 6: Final answer
    x = 11,159.09

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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.