Home / 31,210.92-46,838.16-13,685.76

Finding the Fourth Proportional to 31,210.92, 46,838.16 and 13,685.76

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Solution

The fourth proportional to 31,210.92, 46,838.16 and 13,685.76 is: 20,538.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,210.92 : 46,838.16 = 13,685.76 : x
  2. Step 2: Convert to fraction form
    31,210.92/46,838.16 = 13,685.76/x
  3. Step 3: Cross multiply
    31,210.92x = 46,838.16 × 13,685.76
  4. Step 4: Simplify right side
    31,210.92x = 641,015,816.60
  5. Step 5: Solve for x
    x = 641,015,816.60/31,210.92
  6. Step 6: Final answer
    x = 20,538.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.