Home / 10,239.86-15,364.74-4,979.36

Finding the Fourth Proportional to 10,239.86, 15,364.74 and 4,979.36

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Solution

The fourth proportional to 10,239.86, 15,364.74 and 4,979.36 is: 7,471.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,239.86 : 15,364.74 = 4,979.36 : x
  2. Step 2: Convert to fraction form
    10,239.86/15,364.74 = 4,979.36/x
  3. Step 3: Cross multiply
    10,239.86x = 15,364.74 × 4,979.36
  4. Step 4: Simplify right side
    10,239.86x = 76,506,571.77
  5. Step 5: Solve for x
    x = 76,506,571.77/10,239.86
  6. Step 6: Final answer
    x = 7,471.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.