Home / 15,327.81-21,162.06-10,031.58

Finding the Fourth Proportional to 15,327.81, 21,162.06 and 10,031.58

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Solution

The fourth proportional to 15,327.81, 21,162.06 and 10,031.58 is: 13,849.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,327.81 : 21,162.06 = 10,031.58 : x
  2. Step 2: Convert to fraction form
    15,327.81/21,162.06 = 10,031.58/x
  3. Step 3: Cross multiply
    15,327.81x = 21,162.06 × 10,031.58
  4. Step 4: Simplify right side
    15,327.81x = 212,288,897.85
  5. Step 5: Solve for x
    x = 212,288,897.85/15,327.81
  6. Step 6: Final answer
    x = 13,849.92

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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.