Home / 12,567.78-18,851.69-5,167.07

Finding the Fourth Proportional to 12,567.78, 18,851.69 and 5,167.07

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Solution

The fourth proportional to 12,567.78, 18,851.69 and 5,167.07 is: 7,750.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,567.78 : 18,851.69 = 5,167.07 : x
  2. Step 2: Convert to fraction form
    12,567.78/18,851.69 = 5,167.07/x
  3. Step 3: Cross multiply
    12,567.78x = 18,851.69 × 5,167.07
  4. Step 4: Simplify right side
    12,567.78x = 97,407,909.12
  5. Step 5: Solve for x
    x = 97,407,909.12/12,567.78
  6. Step 6: Final answer
    x = 7,750.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.