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Finding the Fourth Proportional to 31,300.40, 46,935.24 and 15,487.16

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Solution

The fourth proportional to 31,300.40, 46,935.24 and 15,487.16 is: 23,223.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,300.40 : 46,935.24 = 15,487.16 : x
  2. Step 2: Convert to fraction form
    31,300.40/46,935.24 = 15,487.16/x
  3. Step 3: Cross multiply
    31,300.40x = 46,935.24 × 15,487.16
  4. Step 4: Simplify right side
    31,300.40x = 726,893,571.52
  5. Step 5: Solve for x
    x = 726,893,571.52/31,300.40
  6. Step 6: Final answer
    x = 23,223.14

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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.