Home / 12,977.61-17,913.33-9,619.35

Finding the Fourth Proportional to 12,977.61, 17,913.33 and 9,619.35

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Solution

The fourth proportional to 12,977.61, 17,913.33 and 9,619.35 is: 13,277.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,977.61 : 17,913.33 = 9,619.35 : x
  2. Step 2: Convert to fraction form
    12,977.61/17,913.33 = 9,619.35/x
  3. Step 3: Cross multiply
    12,977.61x = 17,913.33 × 9,619.35
  4. Step 4: Simplify right side
    12,977.61x = 172,314,590.94
  5. Step 5: Solve for x
    x = 172,314,590.94/12,977.61
  6. Step 6: Final answer
    x = 13,277.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.