Home / 20,436.48-28,203.12-12,482.28

Finding the Fourth Proportional to 20,436.48, 28,203.12 and 12,482.28

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Solution

The fourth proportional to 20,436.48, 28,203.12 and 12,482.28 is: 17,226.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,436.48 : 28,203.12 = 12,482.28 : x
  2. Step 2: Convert to fraction form
    20,436.48/28,203.12 = 12,482.28/x
  3. Step 3: Cross multiply
    20,436.48x = 28,203.12 × 12,482.28
  4. Step 4: Simplify right side
    20,436.48x = 352,039,240.71
  5. Step 5: Solve for x
    x = 352,039,240.71/20,436.48
  6. Step 6: Final answer
    x = 17,226.02

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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.