Home / 28,031.04-38,682.90-15,455.88

Finding the Fourth Proportional to 28,031.04, 38,682.90 and 15,455.88

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Solution

The fourth proportional to 28,031.04, 38,682.90 and 15,455.88 is: 21,329.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,031.04 : 38,682.90 = 15,455.88 : x
  2. Step 2: Convert to fraction form
    28,031.04/38,682.90 = 15,455.88/x
  3. Step 3: Cross multiply
    28,031.04x = 38,682.90 × 15,455.88
  4. Step 4: Simplify right side
    28,031.04x = 597,878,260.45
  5. Step 5: Solve for x
    x = 597,878,260.45/28,031.04
  6. Step 6: Final answer
    x = 21,329.15

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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.