Home / 26,431.86-36,477.12-15,819.42

Finding the Fourth Proportional to 26,431.86, 36,477.12 and 15,819.42

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Solution

The fourth proportional to 26,431.86, 36,477.12 and 15,819.42 is: 21,831.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,431.86 : 36,477.12 = 15,819.42 : x
  2. Step 2: Convert to fraction form
    26,431.86/36,477.12 = 15,819.42/x
  3. Step 3: Cross multiply
    26,431.86x = 36,477.12 × 15,819.42
  4. Step 4: Simplify right side
    26,431.86x = 577,046,881.67
  5. Step 5: Solve for x
    x = 577,046,881.67/26,431.86
  6. Step 6: Final answer
    x = 21,831.49

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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.