Home / 12,962.12-17,878.17-9,775.55

Finding the Fourth Proportional to 12,962.12, 17,878.17 and 9,775.55

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Solution

The fourth proportional to 12,962.12, 17,878.17 and 9,775.55 is: 13,483.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,962.12 : 17,878.17 = 9,775.55 : x
  2. Step 2: Convert to fraction form
    12,962.12/17,878.17 = 9,775.55/x
  3. Step 3: Cross multiply
    12,962.12x = 17,878.17 × 9,775.55
  4. Step 4: Simplify right side
    12,962.12x = 174,768,855.35
  5. Step 5: Solve for x
    x = 174,768,855.35/12,962.12
  6. Step 6: Final answer
    x = 13,483.05

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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.