Home / 30,156.12-45,219.60-13,515.48

Finding the Fourth Proportional to 30,156.12, 45,219.60 and 13,515.48

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Solution

The fourth proportional to 30,156.12, 45,219.60 and 13,515.48 is: 20,266.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,156.12 : 45,219.60 = 13,515.48 : x
  2. Step 2: Convert to fraction form
    30,156.12/45,219.60 = 13,515.48/x
  3. Step 3: Cross multiply
    30,156.12x = 45,219.60 × 13,515.48
  4. Step 4: Simplify right side
    30,156.12x = 611,164,599.41
  5. Step 5: Solve for x
    x = 611,164,599.41/30,156.12
  6. Step 6: Final answer
    x = 20,266.69

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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.