Home / 20,442.84-28,206-12,482.16

Finding the Fourth Proportional to 20,442.84, 28,206 and 12,482.16

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Solution

The fourth proportional to 20,442.84, 28,206 and 12,482.16 is: 17,222.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,442.84 : 28,206 = 12,482.16 : x
  2. Step 2: Convert to fraction form
    20,442.84/28,206 = 12,482.16/x
  3. Step 3: Cross multiply
    20,442.84x = 28,206 × 12,482.16
  4. Step 4: Simplify right side
    20,442.84x = 352,071,804.96
  5. Step 5: Solve for x
    x = 352,071,804.96/20,442.84
  6. Step 6: Final answer
    x = 17,222.26

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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.