Home / 15,317.17-21,137.16-9,358.81

Finding the Fourth Proportional to 15,317.17, 21,137.16 and 9,358.81

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Solution

The fourth proportional to 15,317.17, 21,137.16 and 9,358.81 is: 12,914.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,317.17 : 21,137.16 = 9,358.81 : x
  2. Step 2: Convert to fraction form
    15,317.17/21,137.16 = 9,358.81/x
  3. Step 3: Cross multiply
    15,317.17x = 21,137.16 × 9,358.81
  4. Step 4: Simplify right side
    15,317.17x = 197,818,664.38
  5. Step 5: Solve for x
    x = 197,818,664.38/15,317.17
  6. Step 6: Final answer
    x = 12,914.83

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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.