Home / 15,848.96-21,871.16-8,775.28

Finding the Fourth Proportional to 15,848.96, 21,871.16 and 8,775.28

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Solution

The fourth proportional to 15,848.96, 21,871.16 and 8,775.28 is: 12,109.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,848.96 : 21,871.16 = 8,775.28 : x
  2. Step 2: Convert to fraction form
    15,848.96/21,871.16 = 8,775.28/x
  3. Step 3: Cross multiply
    15,848.96x = 21,871.16 × 8,775.28
  4. Step 4: Simplify right side
    15,848.96x = 191,925,552.92
  5. Step 5: Solve for x
    x = 191,925,552.92/15,848.96
  6. Step 6: Final answer
    x = 12,109.66

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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.