Home / 22,730.36-31,342.81-15,561.44

Finding the Fourth Proportional to 22,730.36, 31,342.81 and 15,561.44

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Solution

The fourth proportional to 22,730.36, 31,342.81 and 15,561.44 is: 21,457.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,730.36 : 31,342.81 = 15,561.44 : x
  2. Step 2: Convert to fraction form
    22,730.36/31,342.81 = 15,561.44/x
  3. Step 3: Cross multiply
    22,730.36x = 31,342.81 × 15,561.44
  4. Step 4: Simplify right side
    22,730.36x = 487,739,318.38
  5. Step 5: Solve for x
    x = 487,739,318.38/22,730.36
  6. Step 6: Final answer
    x = 21,457.62

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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.