Home / 21,292.04-31,911.60-13,503.08

Finding the Fourth Proportional to 21,292.04, 31,911.60 and 13,503.08

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Solution

The fourth proportional to 21,292.04, 31,911.60 and 13,503.08 is: 20,237.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,292.04 : 31,911.60 = 13,503.08 : x
  2. Step 2: Convert to fraction form
    21,292.04/31,911.60 = 13,503.08/x
  3. Step 3: Cross multiply
    21,292.04x = 31,911.60 × 13,503.08
  4. Step 4: Simplify right side
    21,292.04x = 430,904,887.73
  5. Step 5: Solve for x
    x = 430,904,887.73/21,292.04
  6. Step 6: Final answer
    x = 20,237.84

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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.