Home / 28,103.46-38,782.68-15,528.18

Finding the Fourth Proportional to 28,103.46, 38,782.68 and 15,528.18

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Solution

The fourth proportional to 28,103.46, 38,782.68 and 15,528.18 is: 21,428.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,103.46 : 38,782.68 = 15,528.18 : x
  2. Step 2: Convert to fraction form
    28,103.46/38,782.68 = 15,528.18/x
  3. Step 3: Cross multiply
    28,103.46x = 38,782.68 × 15,528.18
  4. Step 4: Simplify right side
    28,103.46x = 602,224,435.92
  5. Step 5: Solve for x
    x = 602,224,435.92/28,103.46
  6. Step 6: Final answer
    x = 21,428.84

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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.