Home / 12,580.04-17,359.98-6,991.40

Finding the Fourth Proportional to 12,580.04, 17,359.98 and 6,991.40

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Solution

The fourth proportional to 12,580.04, 17,359.98 and 6,991.40 is: 9,647.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,580.04 : 17,359.98 = 6,991.40 : x
  2. Step 2: Convert to fraction form
    12,580.04/17,359.98 = 6,991.40/x
  3. Step 3: Cross multiply
    12,580.04x = 17,359.98 × 6,991.40
  4. Step 4: Simplify right side
    12,580.04x = 121,370,564.17
  5. Step 5: Solve for x
    x = 121,370,564.17/12,580.04
  6. Step 6: Final answer
    x = 9,647.87

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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.