Home / 21,247.40-29,319.36-12,293.12

Finding the Fourth Proportional to 21,247.40, 29,319.36 and 12,293.12

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Solution

The fourth proportional to 21,247.40, 29,319.36 and 12,293.12 is: 16,963.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,247.40 : 29,319.36 = 12,293.12 : x
  2. Step 2: Convert to fraction form
    21,247.40/29,319.36 = 12,293.12/x
  3. Step 3: Cross multiply
    21,247.40x = 29,319.36 × 12,293.12
  4. Step 4: Simplify right side
    21,247.40x = 360,426,410.80
  5. Step 5: Solve for x
    x = 360,426,410.80/21,247.40
  6. Step 6: Final answer
    x = 16,963.32

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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.