Home / 14,079.12-21,123.51-5,316.54

Finding the Fourth Proportional to 14,079.12, 21,123.51 and 5,316.54

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Solution

The fourth proportional to 14,079.12, 21,123.51 and 5,316.54 is: 7,976.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,079.12 : 21,123.51 = 5,316.54 : x
  2. Step 2: Convert to fraction form
    14,079.12/21,123.51 = 5,316.54/x
  3. Step 3: Cross multiply
    14,079.12x = 21,123.51 × 5,316.54
  4. Step 4: Simplify right side
    14,079.12x = 112,303,985.86
  5. Step 5: Solve for x
    x = 112,303,985.86/14,079.12
  6. Step 6: Final answer
    x = 7,976.63

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1.5x scale

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.