Home / 28,158.52-38,874.18-19,219.36

Finding the Fourth Proportional to 28,158.52, 38,874.18 and 19,219.36

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Solution

The fourth proportional to 28,158.52, 38,874.18 and 19,219.36 is: 26,533.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,158.52 : 38,874.18 = 19,219.36 : x
  2. Step 2: Convert to fraction form
    28,158.52/38,874.18 = 19,219.36/x
  3. Step 3: Cross multiply
    28,158.52x = 38,874.18 × 19,219.36
  4. Step 4: Simplify right side
    28,158.52x = 747,136,860.12
  5. Step 5: Solve for x
    x = 747,136,860.12/28,158.52
  6. Step 6: Final answer
    x = 26,533.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.