Home / 20,689.51-31,009.96-9,572.72

Finding the Fourth Proportional to 20,689.51, 31,009.96 and 9,572.72

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Solution

The fourth proportional to 20,689.51, 31,009.96 and 9,572.72 is: 14,347.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,689.51 : 31,009.96 = 9,572.72 : x
  2. Step 2: Convert to fraction form
    20,689.51/31,009.96 = 9,572.72/x
  3. Step 3: Cross multiply
    20,689.51x = 31,009.96 × 9,572.72
  4. Step 4: Simplify right side
    20,689.51x = 296,849,467.36
  5. Step 5: Solve for x
    x = 296,849,467.36/20,689.51
  6. Step 6: Final answer
    x = 14,347.83

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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.