Home / 21,133.71-29,170.35-12,641.67

Finding the Fourth Proportional to 21,133.71, 29,170.35 and 12,641.67

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Solution

The fourth proportional to 21,133.71, 29,170.35 and 12,641.67 is: 17,448.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,133.71 : 29,170.35 = 12,641.67 : x
  2. Step 2: Convert to fraction form
    21,133.71/29,170.35 = 12,641.67/x
  3. Step 3: Cross multiply
    21,133.71x = 29,170.35 × 12,641.67
  4. Step 4: Simplify right side
    21,133.71x = 368,761,938.48
  5. Step 5: Solve for x
    x = 368,761,938.48/21,133.71
  6. Step 6: Final answer
    x = 17,448.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.