Home / 28,321.36-42,482.04-13,485.30

Finding the Fourth Proportional to 28,321.36, 42,482.04 and 13,485.30

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Solution

The fourth proportional to 28,321.36, 42,482.04 and 13,485.30 is: 20,227.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,321.36 : 42,482.04 = 13,485.30 : x
  2. Step 2: Convert to fraction form
    28,321.36/42,482.04 = 13,485.30/x
  3. Step 3: Cross multiply
    28,321.36x = 42,482.04 × 13,485.30
  4. Step 4: Simplify right side
    28,321.36x = 572,883,054.01
  5. Step 5: Solve for x
    x = 572,883,054.01/28,321.36
  6. Step 6: Final answer
    x = 20,227.95

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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.