Home / 31,391.83-47,075.40-11,396.59

Finding the Fourth Proportional to 31,391.83, 47,075.40 and 11,396.59

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Solution

The fourth proportional to 31,391.83, 47,075.40 and 11,396.59 is: 17,090.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,391.83 : 47,075.40 = 11,396.59 : x
  2. Step 2: Convert to fraction form
    31,391.83/47,075.40 = 11,396.59/x
  3. Step 3: Cross multiply
    31,391.83x = 47,075.40 × 11,396.59
  4. Step 4: Simplify right side
    31,391.83x = 536,499,032.89
  5. Step 5: Solve for x
    x = 536,499,032.89/31,391.83
  6. Step 6: Final answer
    x = 17,090.40

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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.