Home / 22,703.52-31,330.37-13,143.81

Finding the Fourth Proportional to 22,703.52, 31,330.37 and 13,143.81

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Solution

The fourth proportional to 22,703.52, 31,330.37 and 13,143.81 is: 18,138.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,703.52 : 31,330.37 = 13,143.81 : x
  2. Step 2: Convert to fraction form
    22,703.52/31,330.37 = 13,143.81/x
  3. Step 3: Cross multiply
    22,703.52x = 31,330.37 × 13,143.81
  4. Step 4: Simplify right side
    22,703.52x = 411,800,364.79
  5. Step 5: Solve for x
    x = 411,800,364.79/22,703.52
  6. Step 6: Final answer
    x = 18,138.17

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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.