Home / 21,746.40-30,010.16-12,794.28

Finding the Fourth Proportional to 21,746.40, 30,010.16 and 12,794.28

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Solution

The fourth proportional to 21,746.40, 30,010.16 and 12,794.28 is: 17,656.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,746.40 : 30,010.16 = 12,794.28 : x
  2. Step 2: Convert to fraction form
    21,746.40/30,010.16 = 12,794.28/x
  3. Step 3: Cross multiply
    21,746.40x = 30,010.16 × 12,794.28
  4. Step 4: Simplify right side
    21,746.40x = 383,958,389.88
  5. Step 5: Solve for x
    x = 383,958,389.88/21,746.40
  6. Step 6: Final answer
    x = 17,656.18

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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.