Home / 31,378.81-47,068.24-19,700.23

Finding the Fourth Proportional to 31,378.81, 47,068.24 and 19,700.23

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Solution

The fourth proportional to 31,378.81, 47,068.24 and 19,700.23 is: 29,550.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,378.81 : 47,068.24 = 19,700.23 : x
  2. Step 2: Convert to fraction form
    31,378.81/47,068.24 = 19,700.23/x
  3. Step 3: Cross multiply
    31,378.81x = 47,068.24 × 19,700.23
  4. Step 4: Simplify right side
    31,378.81x = 927,255,153.70
  5. Step 5: Solve for x
    x = 927,255,153.70/31,378.81
  6. Step 6: Final answer
    x = 29,550.36

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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.