Home / 21,268.40-29,332.68-13,296.08

Finding the Fourth Proportional to 21,268.40, 29,332.68 and 13,296.08

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Solution

The fourth proportional to 21,268.40, 29,332.68 and 13,296.08 is: 18,337.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,268.40 : 29,332.68 = 13,296.08 : x
  2. Step 2: Convert to fraction form
    21,268.40/29,332.68 = 13,296.08/x
  3. Step 3: Cross multiply
    21,268.40x = 29,332.68 × 13,296.08
  4. Step 4: Simplify right side
    21,268.40x = 390,009,659.89
  5. Step 5: Solve for x
    x = 390,009,659.89/21,268.40
  6. Step 6: Final answer
    x = 18,337.52

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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.