Home / 21,681.64-32,444.70-18,769.96

Finding the Fourth Proportional to 21,681.64, 32,444.70 and 18,769.96

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Solution

The fourth proportional to 21,681.64, 32,444.70 and 18,769.96 is: 28,087.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,681.64 : 32,444.70 = 18,769.96 : x
  2. Step 2: Convert to fraction form
    21,681.64/32,444.70 = 18,769.96/x
  3. Step 3: Cross multiply
    21,681.64x = 32,444.70 × 18,769.96
  4. Step 4: Simplify right side
    21,681.64x = 608,985,721.21
  5. Step 5: Solve for x
    x = 608,985,721.21/21,681.64
  6. Step 6: Final answer
    x = 28,087.62

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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.