Home / 20,312.18-27,968.48-17,780.12

Finding the Fourth Proportional to 20,312.18, 27,968.48 and 17,780.12

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Solution

The fourth proportional to 20,312.18, 27,968.48 and 17,780.12 is: 24,482.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,312.18 : 27,968.48 = 17,780.12 : x
  2. Step 2: Convert to fraction form
    20,312.18/27,968.48 = 17,780.12/x
  3. Step 3: Cross multiply
    20,312.18x = 27,968.48 × 17,780.12
  4. Step 4: Simplify right side
    20,312.18x = 497,282,930.62
  5. Step 5: Solve for x
    x = 497,282,930.62/20,312.18
  6. Step 6: Final answer
    x = 24,482.01

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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.