Home / 15,496.16-21,384.66-8,422.58

Finding the Fourth Proportional to 15,496.16, 21,384.66 and 8,422.58

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Solution

The fourth proportional to 15,496.16, 21,384.66 and 8,422.58 is: 11,623.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,496.16 : 21,384.66 = 8,422.58 : x
  2. Step 2: Convert to fraction form
    15,496.16/21,384.66 = 8,422.58/x
  3. Step 3: Cross multiply
    15,496.16x = 21,384.66 × 8,422.58
  4. Step 4: Simplify right side
    15,496.16x = 180,114,009.62
  5. Step 5: Solve for x
    x = 180,114,009.62/15,496.16
  6. Step 6: Final answer
    x = 11,623.14

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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.