Home / 15,828.28-21,848.55-9,116.62

Finding the Fourth Proportional to 15,828.28, 21,848.55 and 9,116.62

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Solution

The fourth proportional to 15,828.28, 21,848.55 and 9,116.62 is: 12,584.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,828.28 : 21,848.55 = 9,116.62 : x
  2. Step 2: Convert to fraction form
    15,828.28/21,848.55 = 9,116.62/x
  3. Step 3: Cross multiply
    15,828.28x = 21,848.55 × 9,116.62
  4. Step 4: Simplify right side
    15,828.28x = 199,184,927.90
  5. Step 5: Solve for x
    x = 199,184,927.90/15,828.28
  6. Step 6: Final answer
    x = 12,584.12

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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.