Home / 30,158.20-45,219.06-13,515.16

Finding the Fourth Proportional to 30,158.20, 45,219.06 and 13,515.16

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Solution

The fourth proportional to 30,158.20, 45,219.06 and 13,515.16 is: 20,264.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,158.20 : 45,219.06 = 13,515.16 : x
  2. Step 2: Convert to fraction form
    30,158.20/45,219.06 = 13,515.16/x
  3. Step 3: Cross multiply
    30,158.20x = 45,219.06 × 13,515.16
  4. Step 4: Simplify right side
    30,158.20x = 611,142,830.95
  5. Step 5: Solve for x
    x = 611,142,830.95/30,158.20
  6. Step 6: Final answer
    x = 20,264.57

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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.