Home / 13,065.23-18,030.40-7,399.86

Finding the Fourth Proportional to 13,065.23, 18,030.40 and 7,399.86

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Solution

The fourth proportional to 13,065.23, 18,030.40 and 7,399.86 is: 10,212.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,065.23 : 18,030.40 = 7,399.86 : x
  2. Step 2: Convert to fraction form
    13,065.23/18,030.40 = 7,399.86/x
  3. Step 3: Cross multiply
    13,065.23x = 18,030.40 × 7,399.86
  4. Step 4: Simplify right side
    13,065.23x = 133,422,349.63
  5. Step 5: Solve for x
    x = 133,422,349.63/13,065.23
  6. Step 6: Final answer
    x = 10,212.01

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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.