Home / 19,402.20-26,762.40-15,859.80

Finding the Fourth Proportional to 19,402.20, 26,762.40 and 15,859.80

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Solution

The fourth proportional to 19,402.20, 26,762.40 and 15,859.80 is: 21,876.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,402.20 : 26,762.40 = 15,859.80 : x
  2. Step 2: Convert to fraction form
    19,402.20/26,762.40 = 15,859.80/x
  3. Step 3: Cross multiply
    19,402.20x = 26,762.40 × 15,859.80
  4. Step 4: Simplify right side
    19,402.20x = 424,446,311.52
  5. Step 5: Solve for x
    x = 424,446,311.52/19,402.20
  6. Step 6: Final answer
    x = 21,876.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.