Home / 20,897.80-31,346.70-19,925.80

Finding the Fourth Proportional to 20,897.80, 31,346.70 and 19,925.80

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Solution

The fourth proportional to 20,897.80, 31,346.70 and 19,925.80 is: 29,888.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,897.80 : 31,346.70 = 19,925.80 : x
  2. Step 2: Convert to fraction form
    20,897.80/31,346.70 = 19,925.80/x
  3. Step 3: Cross multiply
    20,897.80x = 31,346.70 × 19,925.80
  4. Step 4: Simplify right side
    20,897.80x = 624,608,074.86
  5. Step 5: Solve for x
    x = 624,608,074.86/20,897.80
  6. Step 6: Final answer
    x = 29,888.70

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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.