Home / 28,256.42-38,994.10-15,681.38

Finding the Fourth Proportional to 28,256.42, 38,994.10 and 15,681.38

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Solution

The fourth proportional to 28,256.42, 38,994.10 and 15,681.38 is: 21,640.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,256.42 : 38,994.10 = 15,681.38 : x
  2. Step 2: Convert to fraction form
    28,256.42/38,994.10 = 15,681.38/x
  3. Step 3: Cross multiply
    28,256.42x = 38,994.10 × 15,681.38
  4. Step 4: Simplify right side
    28,256.42x = 611,481,299.86
  5. Step 5: Solve for x
    x = 611,481,299.86/28,256.42
  6. Step 6: Final answer
    x = 21,640.44

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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.