Home / 15,030.10-20,743.32-8,742.46

Finding the Fourth Proportional to 15,030.10, 20,743.32 and 8,742.46

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Solution

The fourth proportional to 15,030.10, 20,743.32 and 8,742.46 is: 12,065.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,030.10 : 20,743.32 = 8,742.46 : x
  2. Step 2: Convert to fraction form
    15,030.10/20,743.32 = 8,742.46/x
  3. Step 3: Cross multiply
    15,030.10x = 20,743.32 × 8,742.46
  4. Step 4: Simplify right side
    15,030.10x = 181,347,645.37
  5. Step 5: Solve for x
    x = 181,347,645.37/15,030.10
  6. Step 6: Final answer
    x = 12,065.63

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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.