Home / 21,347.40-31,948.20-19,597.80

Finding the Fourth Proportional to 21,347.40, 31,948.20 and 19,597.80

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Solution

The fourth proportional to 21,347.40, 31,948.20 and 19,597.80 is: 29,329.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,347.40 : 31,948.20 = 19,597.80 : x
  2. Step 2: Convert to fraction form
    21,347.40/31,948.20 = 19,597.80/x
  3. Step 3: Cross multiply
    21,347.40x = 31,948.20 × 19,597.80
  4. Step 4: Simplify right side
    21,347.40x = 626,114,433.96
  5. Step 5: Solve for x
    x = 626,114,433.96/21,347.40
  6. Step 6: Final answer
    x = 29,329.77

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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.