Home / 31,988.21-47,961.78-13,281.16

Finding the Fourth Proportional to 31,988.21, 47,961.78 and 13,281.16

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Solution

The fourth proportional to 31,988.21, 47,961.78 and 13,281.16 is: 19,913.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,988.21 : 47,961.78 = 13,281.16 : x
  2. Step 2: Convert to fraction form
    31,988.21/47,961.78 = 13,281.16/x
  3. Step 3: Cross multiply
    31,988.21x = 47,961.78 × 13,281.16
  4. Step 4: Simplify right side
    31,988.21x = 636,987,954.16
  5. Step 5: Solve for x
    x = 636,987,954.16/31,988.21
  6. Step 6: Final answer
    x = 19,913.21

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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.