Home / 20,637.12-28,446.24-15,803.04

Finding the Fourth Proportional to 20,637.12, 28,446.24 and 15,803.04

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Solution

The fourth proportional to 20,637.12, 28,446.24 and 15,803.04 is: 21,782.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,637.12 : 28,446.24 = 15,803.04 : x
  2. Step 2: Convert to fraction form
    20,637.12/28,446.24 = 15,803.04/x
  3. Step 3: Cross multiply
    20,637.12x = 28,446.24 × 15,803.04
  4. Step 4: Simplify right side
    20,637.12x = 449,537,068.57
  5. Step 5: Solve for x
    x = 449,537,068.57/20,637.12
  6. Step 6: Final answer
    x = 21,782.94

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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.