Home / 21,302.90-31,951.55-6,513.30

Finding the Fourth Proportional to 21,302.90, 31,951.55 and 6,513.30

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Solution

The fourth proportional to 21,302.90, 31,951.55 and 6,513.30 is: 9,769.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,302.90 : 31,951.55 = 6,513.30 : x
  2. Step 2: Convert to fraction form
    21,302.90/31,951.55 = 6,513.30/x
  3. Step 3: Cross multiply
    21,302.90x = 31,951.55 × 6,513.30
  4. Step 4: Simplify right side
    21,302.90x = 208,110,030.62
  5. Step 5: Solve for x
    x = 208,110,030.62/21,302.90
  6. Step 6: Final answer
    x = 9,769.09

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1.5x scale

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.