Home / 13,980.08-19,304.18-9,285.32

Finding the Fourth Proportional to 13,980.08, 19,304.18 and 9,285.32

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Solution

The fourth proportional to 13,980.08, 19,304.18 and 9,285.32 is: 12,821.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,980.08 : 19,304.18 = 9,285.32 : x
  2. Step 2: Convert to fraction form
    13,980.08/19,304.18 = 9,285.32/x
  3. Step 3: Cross multiply
    13,980.08x = 19,304.18 × 9,285.32
  4. Step 4: Simplify right side
    13,980.08x = 179,245,345.69
  5. Step 5: Solve for x
    x = 179,245,345.69/13,980.08
  6. Step 6: Final answer
    x = 12,821.49

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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.