Home / 12,007.79-16,569.11-6,971.21

Finding the Fourth Proportional to 12,007.79, 16,569.11 and 6,971.21

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Solution

The fourth proportional to 12,007.79, 16,569.11 and 6,971.21 is: 9,619.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,007.79 : 16,569.11 = 6,971.21 : x
  2. Step 2: Convert to fraction form
    12,007.79/16,569.11 = 6,971.21/x
  3. Step 3: Cross multiply
    12,007.79x = 16,569.11 × 6,971.21
  4. Step 4: Simplify right side
    12,007.79x = 115,506,745.32
  5. Step 5: Solve for x
    x = 115,506,745.32/12,007.79
  6. Step 6: Final answer
    x = 9,619.32

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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.