Home / 21,178.16-29,225.04-11,746.56

Finding the Fourth Proportional to 21,178.16, 29,225.04 and 11,746.56

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Solution

The fourth proportional to 21,178.16, 29,225.04 and 11,746.56 is: 16,209.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,178.16 : 29,225.04 = 11,746.56 : x
  2. Step 2: Convert to fraction form
    21,178.16/29,225.04 = 11,746.56/x
  3. Step 3: Cross multiply
    21,178.16x = 29,225.04 × 11,746.56
  4. Step 4: Simplify right side
    21,178.16x = 343,293,685.86
  5. Step 5: Solve for x
    x = 343,293,685.86/21,178.16
  6. Step 6: Final answer
    x = 16,209.80

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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.