Home / 35,981.80-53,972.70-12,605.80

Finding the Fourth Proportional to 35,981.80, 53,972.70 and 12,605.80

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Solution

The fourth proportional to 35,981.80, 53,972.70 and 12,605.80 is: 18,908.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,981.80 : 53,972.70 = 12,605.80 : x
  2. Step 2: Convert to fraction form
    35,981.80/53,972.70 = 12,605.80/x
  3. Step 3: Cross multiply
    35,981.80x = 53,972.70 × 12,605.80
  4. Step 4: Simplify right side
    35,981.80x = 680,369,061.66
  5. Step 5: Solve for x
    x = 680,369,061.66/35,981.80
  6. Step 6: Final answer
    x = 18,908.70

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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.