Home / 21,313.80-31,973.10-6,522.60

Finding the Fourth Proportional to 21,313.80, 31,973.10 and 6,522.60

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Solution

The fourth proportional to 21,313.80, 31,973.10 and 6,522.60 is: 9,784.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,313.80 : 31,973.10 = 6,522.60 : x
  2. Step 2: Convert to fraction form
    21,313.80/31,973.10 = 6,522.60/x
  3. Step 3: Cross multiply
    21,313.80x = 31,973.10 × 6,522.60
  4. Step 4: Simplify right side
    21,313.80x = 208,547,742.06
  5. Step 5: Solve for x
    x = 208,547,742.06/21,313.80
  6. Step 6: Final answer
    x = 9,784.63

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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.