Home / 13,980.24-19,320.36-11,458.32

Finding the Fourth Proportional to 13,980.24, 19,320.36 and 11,458.32

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Solution

The fourth proportional to 13,980.24, 19,320.36 and 11,458.32 is: 15,835.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,980.24 : 19,320.36 = 11,458.32 : x
  2. Step 2: Convert to fraction form
    13,980.24/19,320.36 = 11,458.32/x
  3. Step 3: Cross multiply
    13,980.24x = 19,320.36 × 11,458.32
  4. Step 4: Simplify right side
    13,980.24x = 221,378,867.40
  5. Step 5: Solve for x
    x = 221,378,867.40/13,980.24
  6. Step 6: Final answer
    x = 15,835.13

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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.