Home / 20,973.12-31,603.08-17,355.12

Finding the Fourth Proportional to 20,973.12, 31,603.08 and 17,355.12

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Solution

The fourth proportional to 20,973.12, 31,603.08 and 17,355.12 is: 26,151.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,973.12 : 31,603.08 = 17,355.12 : x
  2. Step 2: Convert to fraction form
    20,973.12/31,603.08 = 17,355.12/x
  3. Step 3: Cross multiply
    20,973.12x = 31,603.08 × 17,355.12
  4. Step 4: Simplify right side
    20,973.12x = 548,475,245.77
  5. Step 5: Solve for x
    x = 548,475,245.77/20,973.12
  6. Step 6: Final answer
    x = 26,151.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.