Home / 31,497.28-43,484.32-20,901.28

Finding the Fourth Proportional to 31,497.28, 43,484.32 and 20,901.28

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Solution

The fourth proportional to 31,497.28, 43,484.32 and 20,901.28 is: 28,855.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,497.28 : 43,484.32 = 20,901.28 : x
  2. Step 2: Convert to fraction form
    31,497.28/43,484.32 = 20,901.28/x
  3. Step 3: Cross multiply
    31,497.28x = 43,484.32 × 20,901.28
  4. Step 4: Simplify right side
    31,497.28x = 908,877,947.93
  5. Step 5: Solve for x
    x = 908,877,947.93/31,497.28
  6. Step 6: Final answer
    x = 28,855.76

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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.