Home / 31,415.82-47,130.66-10,355.02

Finding the Fourth Proportional to 31,415.82, 47,130.66 and 10,355.02

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Solution

The fourth proportional to 31,415.82, 47,130.66 and 10,355.02 is: 15,534.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,415.82 : 47,130.66 = 10,355.02 : x
  2. Step 2: Convert to fraction form
    31,415.82/47,130.66 = 10,355.02/x
  3. Step 3: Cross multiply
    31,415.82x = 47,130.66 × 10,355.02
  4. Step 4: Simplify right side
    31,415.82x = 488,038,926.91
  5. Step 5: Solve for x
    x = 488,038,926.91/31,415.82
  6. Step 6: Final answer
    x = 15,534.81

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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.