Home / 21,063.63-31,595.39-8,580.92

Finding the Fourth Proportional to 21,063.63, 31,595.39 and 8,580.92

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Solution

The fourth proportional to 21,063.63, 31,595.39 and 8,580.92 is: 12,871.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,063.63 : 31,595.39 = 8,580.92 : x
  2. Step 2: Convert to fraction form
    21,063.63/31,595.39 = 8,580.92/x
  3. Step 3: Cross multiply
    21,063.63x = 31,595.39 × 8,580.92
  4. Step 4: Simplify right side
    21,063.63x = 271,117,313.08
  5. Step 5: Solve for x
    x = 271,117,313.08/21,063.63
  6. Step 6: Final answer
    x = 12,871.35

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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.