Home / 18,764.40-28,152.24-5,617.20

Finding the Fourth Proportional to 18,764.40, 28,152.24 and 5,617.20

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Solution

The fourth proportional to 18,764.40, 28,152.24 and 5,617.20 is: 8,427.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,764.40 : 28,152.24 = 5,617.20 : x
  2. Step 2: Convert to fraction form
    18,764.40/28,152.24 = 5,617.20/x
  3. Step 3: Cross multiply
    18,764.40x = 28,152.24 × 5,617.20
  4. Step 4: Simplify right side
    18,764.40x = 158,136,762.53
  5. Step 5: Solve for x
    x = 158,136,762.53/18,764.40
  6. Step 6: Final answer
    x = 8,427.49

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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.