Home / 21,955.81-32,869.10-13,609.03

Finding the Fourth Proportional to 21,955.81, 32,869.10 and 13,609.03

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Solution

The fourth proportional to 21,955.81, 32,869.10 and 13,609.03 is: 20,373.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,955.81 : 32,869.10 = 13,609.03 : x
  2. Step 2: Convert to fraction form
    21,955.81/32,869.10 = 13,609.03/x
  3. Step 3: Cross multiply
    21,955.81x = 32,869.10 × 13,609.03
  4. Step 4: Simplify right side
    21,955.81x = 447,316,335.58
  5. Step 5: Solve for x
    x = 447,316,335.58/21,955.81
  6. Step 6: Final answer
    x = 20,373.49

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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.