Home / 15,228.52-21,016.14-9,259.20

Finding the Fourth Proportional to 15,228.52, 21,016.14 and 9,259.20

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Solution

The fourth proportional to 15,228.52, 21,016.14 and 9,259.20 is: 12,778.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,228.52 : 21,016.14 = 9,259.20 : x
  2. Step 2: Convert to fraction form
    15,228.52/21,016.14 = 9,259.20/x
  3. Step 3: Cross multiply
    15,228.52x = 21,016.14 × 9,259.20
  4. Step 4: Simplify right side
    15,228.52x = 194,592,643.49
  5. Step 5: Solve for x
    x = 194,592,643.49/15,228.52
  6. Step 6: Final answer
    x = 12,778.17

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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.