Home / 21,809.80-32,714.70-18,537.40

Finding the Fourth Proportional to 21,809.80, 32,714.70 and 18,537.40

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Solution

The fourth proportional to 21,809.80, 32,714.70 and 18,537.40 is: 27,806.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,809.80 : 32,714.70 = 18,537.40 : x
  2. Step 2: Convert to fraction form
    21,809.80/32,714.70 = 18,537.40/x
  3. Step 3: Cross multiply
    21,809.80x = 32,714.70 × 18,537.40
  4. Step 4: Simplify right side
    21,809.80x = 606,445,479.78
  5. Step 5: Solve for x
    x = 606,445,479.78/21,809.80
  6. Step 6: Final answer
    x = 27,806.10

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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.