Home / 21,931.68-30,263.52-14,860.80

Finding the Fourth Proportional to 21,931.68, 30,263.52 and 14,860.80

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Solution

The fourth proportional to 21,931.68, 30,263.52 and 14,860.80 is: 20,506.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,931.68 : 30,263.52 = 14,860.80 : x
  2. Step 2: Convert to fraction form
    21,931.68/30,263.52 = 14,860.80/x
  3. Step 3: Cross multiply
    21,931.68x = 30,263.52 × 14,860.80
  4. Step 4: Simplify right side
    21,931.68x = 449,740,118.02
  5. Step 5: Solve for x
    x = 449,740,118.02/21,931.68
  6. Step 6: Final answer
    x = 20,506.41

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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.