Home / 31,113.64-42,929.22-19,950.76

Finding the Fourth Proportional to 31,113.64, 42,929.22 and 19,950.76

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Solution

The fourth proportional to 31,113.64, 42,929.22 and 19,950.76 is: 27,527.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,113.64 : 42,929.22 = 19,950.76 : x
  2. Step 2: Convert to fraction form
    31,113.64/42,929.22 = 19,950.76/x
  3. Step 3: Cross multiply
    31,113.64x = 42,929.22 × 19,950.76
  4. Step 4: Simplify right side
    31,113.64x = 856,470,565.21
  5. Step 5: Solve for x
    x = 856,470,565.21/31,113.64
  6. Step 6: Final answer
    x = 27,527.17

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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.