Home / 27,487.31-37,929.28-15,388.45

Finding the Fourth Proportional to 27,487.31, 37,929.28 and 15,388.45

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Solution

The fourth proportional to 27,487.31, 37,929.28 and 15,388.45 is: 21,234.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,487.31 : 37,929.28 = 15,388.45 : x
  2. Step 2: Convert to fraction form
    27,487.31/37,929.28 = 15,388.45/x
  3. Step 3: Cross multiply
    27,487.31x = 37,929.28 × 15,388.45
  4. Step 4: Simplify right side
    27,487.31x = 583,672,828.82
  5. Step 5: Solve for x
    x = 583,672,828.82/27,487.31
  6. Step 6: Final answer
    x = 21,234.27

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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.