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Finding the Fourth Proportional to 31,004.80, 46,528.80 and 19,938.40

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Solution

The fourth proportional to 31,004.80, 46,528.80 and 19,938.40 is: 29,921.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,004.80 : 46,528.80 = 19,938.40 : x
  2. Step 2: Convert to fraction form
    31,004.80/46,528.80 = 19,938.40/x
  3. Step 3: Cross multiply
    31,004.80x = 46,528.80 × 19,938.40
  4. Step 4: Simplify right side
    31,004.80x = 927,709,825.92
  5. Step 5: Solve for x
    x = 927,709,825.92/31,004.80
  6. Step 6: Final answer
    x = 29,921.49

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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.