Home / 20,690.51-31,011.45-9,573.72

Finding the Fourth Proportional to 20,690.51, 31,011.45 and 9,573.72

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Solution

The fourth proportional to 20,690.51, 31,011.45 and 9,573.72 is: 14,349.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,690.51 : 31,011.45 = 9,573.72 : x
  2. Step 2: Convert to fraction form
    20,690.51/31,011.45 = 9,573.72/x
  3. Step 3: Cross multiply
    20,690.51x = 31,011.45 × 9,573.72
  4. Step 4: Simplify right side
    20,690.51x = 296,894,939.09
  5. Step 5: Solve for x
    x = 296,894,939.09/20,690.51
  6. Step 6: Final answer
    x = 14,349.33

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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.