Home / 13,217.86-18,235.29-9,018.82

Finding the Fourth Proportional to 13,217.86, 18,235.29 and 9,018.82

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Solution

The fourth proportional to 13,217.86, 18,235.29 and 9,018.82 is: 12,442.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,217.86 : 18,235.29 = 9,018.82 : x
  2. Step 2: Convert to fraction form
    13,217.86/18,235.29 = 9,018.82/x
  3. Step 3: Cross multiply
    13,217.86x = 18,235.29 × 9,018.82
  4. Step 4: Simplify right side
    13,217.86x = 164,460,798.16
  5. Step 5: Solve for x
    x = 164,460,798.16/13,217.86
  6. Step 6: Final answer
    x = 12,442.32

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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.