Home / 21,322.49-31,988.52-6,530.40

Finding the Fourth Proportional to 21,322.49, 31,988.52 and 6,530.40

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Solution

The fourth proportional to 21,322.49, 31,988.52 and 6,530.40 is: 9,797.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,322.49 : 31,988.52 = 6,530.40 : x
  2. Step 2: Convert to fraction form
    21,322.49/31,988.52 = 6,530.40/x
  3. Step 3: Cross multiply
    21,322.49x = 31,988.52 × 6,530.40
  4. Step 4: Simplify right side
    21,322.49x = 208,897,831.01
  5. Step 5: Solve for x
    x = 208,897,831.01/21,322.49
  6. Step 6: Final answer
    x = 9,797.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.