Home / 12,123.07-16,724.20-7,087.51

Finding the Fourth Proportional to 12,123.07, 16,724.20 and 7,087.51

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Solution

The fourth proportional to 12,123.07, 16,724.20 and 7,087.51 is: 9,777.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,123.07 : 16,724.20 = 7,087.51 : x
  2. Step 2: Convert to fraction form
    12,123.07/16,724.20 = 7,087.51/x
  3. Step 3: Cross multiply
    12,123.07x = 16,724.20 × 7,087.51
  4. Step 4: Simplify right side
    12,123.07x = 118,532,934.74
  5. Step 5: Solve for x
    x = 118,532,934.74/12,123.07
  6. Step 6: Final answer
    x = 9,777.47

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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.