Home / 15,209.84-20,988.72-8,495.89

Finding the Fourth Proportional to 15,209.84, 20,988.72 and 8,495.89

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Solution

The fourth proportional to 15,209.84, 20,988.72 and 8,495.89 is: 11,723.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,209.84 : 20,988.72 = 8,495.89 : x
  2. Step 2: Convert to fraction form
    15,209.84/20,988.72 = 8,495.89/x
  3. Step 3: Cross multiply
    15,209.84x = 20,988.72 × 8,495.89
  4. Step 4: Simplify right side
    15,209.84x = 178,317,803.89
  5. Step 5: Solve for x
    x = 178,317,803.89/15,209.84
  6. Step 6: Final answer
    x = 11,723.84

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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.