Home / 10,931.76-16,386.48-9,619.56

Finding the Fourth Proportional to 10,931.76, 16,386.48 and 9,619.56

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Solution

The fourth proportional to 10,931.76, 16,386.48 and 9,619.56 is: 14,419.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,931.76 : 16,386.48 = 9,619.56 : x
  2. Step 2: Convert to fraction form
    10,931.76/16,386.48 = 9,619.56/x
  3. Step 3: Cross multiply
    10,931.76x = 16,386.48 × 9,619.56
  4. Step 4: Simplify right side
    10,931.76x = 157,630,727.55
  5. Step 5: Solve for x
    x = 157,630,727.55/10,931.76
  6. Step 6: Final answer
    x = 14,419.52

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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.