Home / 21,167.60-31,751.40-17,788.40

Finding the Fourth Proportional to 21,167.60, 31,751.40 and 17,788.40

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Solution

The fourth proportional to 21,167.60, 31,751.40 and 17,788.40 is: 26,682.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,167.60 : 31,751.40 = 17,788.40 : x
  2. Step 2: Convert to fraction form
    21,167.60/31,751.40 = 17,788.40/x
  3. Step 3: Cross multiply
    21,167.60x = 31,751.40 × 17,788.40
  4. Step 4: Simplify right side
    21,167.60x = 564,806,603.76
  5. Step 5: Solve for x
    x = 564,806,603.76/21,167.60
  6. Step 6: Final answer
    x = 26,682.60

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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.