Home / 27,815.16-38,384.64-15,239.88

Finding the Fourth Proportional to 27,815.16, 38,384.64 and 15,239.88

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Solution

The fourth proportional to 27,815.16, 38,384.64 and 15,239.88 is: 21,030.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,815.16 : 38,384.64 = 15,239.88 : x
  2. Step 2: Convert to fraction form
    27,815.16/38,384.64 = 15,239.88/x
  3. Step 3: Cross multiply
    27,815.16x = 38,384.64 × 15,239.88
  4. Step 4: Simplify right side
    27,815.16x = 584,977,307.44
  5. Step 5: Solve for x
    x = 584,977,307.44/27,815.16
  6. Step 6: Final answer
    x = 21,030.88

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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.