Home / 21,090.29-31,623.45-8,595.68

Finding the Fourth Proportional to 21,090.29, 31,623.45 and 8,595.68

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Solution

The fourth proportional to 21,090.29, 31,623.45 and 8,595.68 is: 12,888.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,090.29 : 31,623.45 = 8,595.68 : x
  2. Step 2: Convert to fraction form
    21,090.29/31,623.45 = 8,595.68/x
  3. Step 3: Cross multiply
    21,090.29x = 31,623.45 × 8,595.68
  4. Step 4: Simplify right side
    21,090.29x = 271,824,866.34
  5. Step 5: Solve for x
    x = 271,824,866.34/21,090.29
  6. Step 6: Final answer
    x = 12,888.63

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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.