Home / 21,012.35-31,475.43-16,829.71

Finding the Fourth Proportional to 21,012.35, 31,475.43 and 16,829.71

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Solution

The fourth proportional to 21,012.35, 31,475.43 and 16,829.71 is: 25,210.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,012.35 : 31,475.43 = 16,829.71 : x
  2. Step 2: Convert to fraction form
    21,012.35/31,475.43 = 16,829.71/x
  3. Step 3: Cross multiply
    21,012.35x = 31,475.43 × 16,829.71
  4. Step 4: Simplify right side
    21,012.35x = 529,722,280.34
  5. Step 5: Solve for x
    x = 529,722,280.34/21,012.35
  6. Step 6: Final answer
    x = 25,210.05

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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.