Home / 21,271.58-29,353.59-11,711.07

Finding the Fourth Proportional to 21,271.58, 29,353.59 and 11,711.07

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Solution

The fourth proportional to 21,271.58, 29,353.59 and 11,711.07 is: 16,160.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,271.58 : 29,353.59 = 11,711.07 : x
  2. Step 2: Convert to fraction form
    21,271.58/29,353.59 = 11,711.07/x
  3. Step 3: Cross multiply
    21,271.58x = 29,353.59 × 11,711.07
  4. Step 4: Simplify right side
    21,271.58x = 343,761,947.24
  5. Step 5: Solve for x
    x = 343,761,947.24/21,271.58
  6. Step 6: Final answer
    x = 16,160.63

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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.