Home / 21,002.69-31,504.65-7,852.55

Finding the Fourth Proportional to 21,002.69, 31,504.65 and 7,852.55

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Solution

The fourth proportional to 21,002.69, 31,504.65 and 7,852.55 is: 11,779.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,002.69 : 31,504.65 = 7,852.55 : x
  2. Step 2: Convert to fraction form
    21,002.69/31,504.65 = 7,852.55/x
  3. Step 3: Cross multiply
    21,002.69x = 31,504.65 × 7,852.55
  4. Step 4: Simplify right side
    21,002.69x = 247,391,652.39
  5. Step 5: Solve for x
    x = 247,391,652.39/21,002.69
  6. Step 6: Final answer
    x = 11,779.04

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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.