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Finding the Fourth Proportional to 34,323.80, 51,485.70 and 21,133.40

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Solution

The fourth proportional to 34,323.80, 51,485.70 and 21,133.40 is: 31,700.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,323.80 : 51,485.70 = 21,133.40 : x
  2. Step 2: Convert to fraction form
    34,323.80/51,485.70 = 21,133.40/x
  3. Step 3: Cross multiply
    34,323.80x = 51,485.70 × 21,133.40
  4. Step 4: Simplify right side
    34,323.80x = 1,088,067,892.38
  5. Step 5: Solve for x
    x = 1,088,067,892.38/34,323.80
  6. Step 6: Final answer
    x = 31,700.10

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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.