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Finding the Fourth Proportional to 35,381.70, 53,069.04 and 12,007.80

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Solution

The fourth proportional to 35,381.70, 53,069.04 and 12,007.80 is: 18,010.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,381.70 : 53,069.04 = 12,007.80 : x
  2. Step 2: Convert to fraction form
    35,381.70/53,069.04 = 12,007.80/x
  3. Step 3: Cross multiply
    35,381.70x = 53,069.04 × 12,007.80
  4. Step 4: Simplify right side
    35,381.70x = 637,242,418.51
  5. Step 5: Solve for x
    x = 637,242,418.51/35,381.70
  6. Step 6: Final answer
    x = 18,010.51

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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.