Home / 21,463.72-32,160.50-20,643.60

Finding the Fourth Proportional to 21,463.72, 32,160.50 and 20,643.60

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Solution

The fourth proportional to 21,463.72, 32,160.50 and 20,643.60 is: 30,931.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,463.72 : 32,160.50 = 20,643.60 : x
  2. Step 2: Convert to fraction form
    21,463.72/32,160.50 = 20,643.60/x
  3. Step 3: Cross multiply
    21,463.72x = 32,160.50 × 20,643.60
  4. Step 4: Simplify right side
    21,463.72x = 663,908,497.80
  5. Step 5: Solve for x
    x = 663,908,497.80/21,463.72
  6. Step 6: Final answer
    x = 30,931.66

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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.