Home / 12,176.07-16,802.84-7,139.25

Finding the Fourth Proportional to 12,176.07, 16,802.84 and 7,139.25

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Solution

The fourth proportional to 12,176.07, 16,802.84 and 7,139.25 is: 9,852.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,176.07 : 16,802.84 = 7,139.25 : x
  2. Step 2: Convert to fraction form
    12,176.07/16,802.84 = 7,139.25/x
  3. Step 3: Cross multiply
    12,176.07x = 16,802.84 × 7,139.25
  4. Step 4: Simplify right side
    12,176.07x = 119,959,639.77
  5. Step 5: Solve for x
    x = 119,959,639.77/12,176.07
  6. Step 6: Final answer
    x = 9,852.08

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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.