Home / 13,283.86-18,331.08-7,315.78

Finding the Fourth Proportional to 13,283.86, 18,331.08 and 7,315.78

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Solution

The fourth proportional to 13,283.86, 18,331.08 and 7,315.78 is: 10,095.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,283.86 : 18,331.08 = 7,315.78 : x
  2. Step 2: Convert to fraction form
    13,283.86/18,331.08 = 7,315.78/x
  3. Step 3: Cross multiply
    13,283.86x = 18,331.08 × 7,315.78
  4. Step 4: Simplify right side
    13,283.86x = 134,106,056.79
  5. Step 5: Solve for x
    x = 134,106,056.79/13,283.86
  6. Step 6: Final answer
    x = 10,095.42

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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.