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Finding the Fourth Proportional to 35,986.77, 53,980.16 and 12,607.74

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Solution

The fourth proportional to 35,986.77, 53,980.16 and 12,607.74 is: 18,911.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,986.77 : 53,980.16 = 12,607.74 : x
  2. Step 2: Convert to fraction form
    35,986.77/53,980.16 = 12,607.74/x
  3. Step 3: Cross multiply
    35,986.77x = 53,980.16 × 12,607.74
  4. Step 4: Simplify right side
    35,986.77x = 680,567,759.40
  5. Step 5: Solve for x
    x = 680,567,759.40/35,986.77
  6. Step 6: Final answer
    x = 18,911.61

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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.