Home / 12,688.14-19,017.63-8,523.12

Finding the Fourth Proportional to 12,688.14, 19,017.63 and 8,523.12

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Solution

The fourth proportional to 12,688.14, 19,017.63 and 8,523.12 is: 12,774.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,688.14 : 19,017.63 = 8,523.12 : x
  2. Step 2: Convert to fraction form
    12,688.14/19,017.63 = 8,523.12/x
  3. Step 3: Cross multiply
    12,688.14x = 19,017.63 × 8,523.12
  4. Step 4: Simplify right side
    12,688.14x = 162,089,542.61
  5. Step 5: Solve for x
    x = 162,089,542.61/12,688.14
  6. Step 6: Final answer
    x = 12,774.89

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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.