Home / 21,123.64-31,666.26-8,804.92

Finding the Fourth Proportional to 21,123.64, 31,666.26 and 8,804.92

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Solution

The fourth proportional to 21,123.64, 31,666.26 and 8,804.92 is: 13,199.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,123.64 : 31,666.26 = 8,804.92 : x
  2. Step 2: Convert to fraction form
    21,123.64/31,666.26 = 8,804.92/x
  3. Step 3: Cross multiply
    21,123.64x = 31,666.26 × 8,804.92
  4. Step 4: Simplify right side
    21,123.64x = 278,818,886.00
  5. Step 5: Solve for x
    x = 278,818,886.00/21,123.64
  6. Step 6: Final answer
    x = 13,199.38

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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.