Home / 20,858.20-31,293.70-16,477.40

Finding the Fourth Proportional to 20,858.20, 31,293.70 and 16,477.40

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Solution

The fourth proportional to 20,858.20, 31,293.70 and 16,477.40 is: 24,721.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,858.20 : 31,293.70 = 16,477.40 : x
  2. Step 2: Convert to fraction form
    20,858.20/31,293.70 = 16,477.40/x
  3. Step 3: Cross multiply
    20,858.20x = 31,293.70 × 16,477.40
  4. Step 4: Simplify right side
    20,858.20x = 515,638,812.38
  5. Step 5: Solve for x
    x = 515,638,812.38/20,858.20
  6. Step 6: Final answer
    x = 24,721.16

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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.