Home / 20,875.65-31,280.63-16,143.36

Finding the Fourth Proportional to 20,875.65, 31,280.63 and 16,143.36

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Solution

The fourth proportional to 20,875.65, 31,280.63 and 16,143.36 is: 24,189.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,875.65 : 31,280.63 = 16,143.36 : x
  2. Step 2: Convert to fraction form
    20,875.65/31,280.63 = 16,143.36/x
  3. Step 3: Cross multiply
    20,875.65x = 31,280.63 × 16,143.36
  4. Step 4: Simplify right side
    20,875.65x = 504,974,471.12
  5. Step 5: Solve for x
    x = 504,974,471.12/20,875.65
  6. Step 6: Final answer
    x = 24,189.64

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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.