Home / 13,358.22-18,434.06-7,389.72

Finding the Fourth Proportional to 13,358.22, 18,434.06 and 7,389.72

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Solution

The fourth proportional to 13,358.22, 18,434.06 and 7,389.72 is: 10,197.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,358.22 : 18,434.06 = 7,389.72 : x
  2. Step 2: Convert to fraction form
    13,358.22/18,434.06 = 7,389.72/x
  3. Step 3: Cross multiply
    13,358.22x = 18,434.06 × 7,389.72
  4. Step 4: Simplify right side
    13,358.22x = 136,222,541.86
  5. Step 5: Solve for x
    x = 136,222,541.86/13,358.22
  6. Step 6: Final answer
    x = 10,197.66

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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.