Home / 19,438.12-29,155.65-5,398.39

Finding the Fourth Proportional to 19,438.12, 29,155.65 and 5,398.39

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Solution

The fourth proportional to 19,438.12, 29,155.65 and 5,398.39 is: 8,097.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,438.12 : 29,155.65 = 5,398.39 : x
  2. Step 2: Convert to fraction form
    19,438.12/29,155.65 = 5,398.39/x
  3. Step 3: Cross multiply
    19,438.12x = 29,155.65 × 5,398.39
  4. Step 4: Simplify right side
    19,438.12x = 157,393,569.40
  5. Step 5: Solve for x
    x = 157,393,569.40/19,438.12
  6. Step 6: Final answer
    x = 8,097.16

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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.