Home / 10,931.51-16,398.48-3,140.32

Finding the Fourth Proportional to 10,931.51, 16,398.48 and 3,140.32

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Solution

The fourth proportional to 10,931.51, 16,398.48 and 3,140.32 is: 4,710.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,931.51 : 16,398.48 = 3,140.32 : x
  2. Step 2: Convert to fraction form
    10,931.51/16,398.48 = 3,140.32/x
  3. Step 3: Cross multiply
    10,931.51x = 16,398.48 × 3,140.32
  4. Step 4: Simplify right side
    10,931.51x = 51,496,449.74
  5. Step 5: Solve for x
    x = 51,496,449.74/10,931.51
  6. Step 6: Final answer
    x = 4,710.83

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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.