Home / 15,288.54-21,078.65-9,901.46

Finding the Fourth Proportional to 15,288.54, 21,078.65 and 9,901.46

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Solution

The fourth proportional to 15,288.54, 21,078.65 and 9,901.46 is: 13,651.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,288.54 : 21,078.65 = 9,901.46 : x
  2. Step 2: Convert to fraction form
    15,288.54/21,078.65 = 9,901.46/x
  3. Step 3: Cross multiply
    15,288.54x = 21,078.65 × 9,901.46
  4. Step 4: Simplify right side
    15,288.54x = 208,709,292.06
  5. Step 5: Solve for x
    x = 208,709,292.06/15,288.54
  6. Step 6: Final answer
    x = 13,651.36

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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.