Home / 28,445.68-39,256.08-15,872.84

Finding the Fourth Proportional to 28,445.68, 39,256.08 and 15,872.84

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Solution

The fourth proportional to 28,445.68, 39,256.08 and 15,872.84 is: 21,905.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,445.68 : 39,256.08 = 15,872.84 : x
  2. Step 2: Convert to fraction form
    28,445.68/39,256.08 = 15,872.84/x
  3. Step 3: Cross multiply
    28,445.68x = 39,256.08 × 15,872.84
  4. Step 4: Simplify right side
    28,445.68x = 623,105,476.87
  5. Step 5: Solve for x
    x = 623,105,476.87/28,445.68
  6. Step 6: Final answer
    x = 21,905.10

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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.