Home / 30,155.41-45,218.74-13,515.58

Finding the Fourth Proportional to 30,155.41, 45,218.74 and 13,515.58

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Solution

The fourth proportional to 30,155.41, 45,218.74 and 13,515.58 is: 20,266.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,155.41 : 45,218.74 = 13,515.58 : x
  2. Step 2: Convert to fraction form
    30,155.41/45,218.74 = 13,515.58/x
  3. Step 3: Cross multiply
    30,155.41x = 45,218.74 × 13,515.58
  4. Step 4: Simplify right side
    30,155.41x = 611,157,497.97
  5. Step 5: Solve for x
    x = 611,157,497.97/30,155.41
  6. Step 6: Final answer
    x = 20,266.93

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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.