Home / 21,200.15-29,256.32-13,246.99

Finding the Fourth Proportional to 21,200.15, 29,256.32 and 13,246.99

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Solution

The fourth proportional to 21,200.15, 29,256.32 and 13,246.99 is: 18,280.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,200.15 : 29,256.32 = 13,246.99 : x
  2. Step 2: Convert to fraction form
    21,200.15/29,256.32 = 13,246.99/x
  3. Step 3: Cross multiply
    21,200.15x = 29,256.32 × 13,246.99
  4. Step 4: Simplify right side
    21,200.15x = 387,558,178.48
  5. Step 5: Solve for x
    x = 387,558,178.48/21,200.15
  6. Step 6: Final answer
    x = 18,280.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.