Home / 21,860.68-30,180.18-14,430.28

Finding the Fourth Proportional to 21,860.68, 30,180.18 and 14,430.28

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Solution

The fourth proportional to 21,860.68, 30,180.18 and 14,430.28 is: 19,922.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,860.68 : 30,180.18 = 14,430.28 : x
  2. Step 2: Convert to fraction form
    21,860.68/30,180.18 = 14,430.28/x
  3. Step 3: Cross multiply
    21,860.68x = 30,180.18 × 14,430.28
  4. Step 4: Simplify right side
    21,860.68x = 435,508,447.85
  5. Step 5: Solve for x
    x = 435,508,447.85/21,860.68
  6. Step 6: Final answer
    x = 19,922.00

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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.