Home / 21,166.08-31,748.92-12,848.40

Finding the Fourth Proportional to 21,166.08, 31,748.92 and 12,848.40

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Solution

The fourth proportional to 21,166.08, 31,748.92 and 12,848.40 is: 19,272.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,166.08 : 31,748.92 = 12,848.40 : x
  2. Step 2: Convert to fraction form
    21,166.08/31,748.92 = 12,848.40/x
  3. Step 3: Cross multiply
    21,166.08x = 31,748.92 × 12,848.40
  4. Step 4: Simplify right side
    21,166.08x = 407,922,823.73
  5. Step 5: Solve for x
    x = 407,922,823.73/21,166.08
  6. Step 6: Final answer
    x = 19,272.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.