Home / 19,823.78-27,352.68-13,455.30

Finding the Fourth Proportional to 19,823.78, 27,352.68 and 13,455.30

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Solution

The fourth proportional to 19,823.78, 27,352.68 and 13,455.30 is: 18,565.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,823.78 : 27,352.68 = 13,455.30 : x
  2. Step 2: Convert to fraction form
    19,823.78/27,352.68 = 13,455.30/x
  3. Step 3: Cross multiply
    19,823.78x = 27,352.68 × 13,455.30
  4. Step 4: Simplify right side
    19,823.78x = 368,038,515.20
  5. Step 5: Solve for x
    x = 368,038,515.20/19,823.78
  6. Step 6: Final answer
    x = 18,565.51

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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.