Home / 31,426.07-47,143.97-19,570.78

Finding the Fourth Proportional to 31,426.07, 47,143.97 and 19,570.78

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Solution

The fourth proportional to 31,426.07, 47,143.97 and 19,570.78 is: 29,359.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,426.07 : 47,143.97 = 19,570.78 : x
  2. Step 2: Convert to fraction form
    31,426.07/47,143.97 = 19,570.78/x
  3. Step 3: Cross multiply
    31,426.07x = 47,143.97 × 19,570.78
  4. Step 4: Simplify right side
    31,426.07x = 922,643,931.62
  5. Step 5: Solve for x
    x = 922,643,931.62/31,426.07
  6. Step 6: Final answer
    x = 29,359.19

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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.