Home / 20,864.07-31,291.74-7,707.42

Finding the Fourth Proportional to 20,864.07, 31,291.74 and 7,707.42

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Solution

The fourth proportional to 20,864.07, 31,291.74 and 7,707.42 is: 11,559.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,864.07 : 31,291.74 = 7,707.42 : x
  2. Step 2: Convert to fraction form
    20,864.07/31,291.74 = 7,707.42/x
  3. Step 3: Cross multiply
    20,864.07x = 31,291.74 × 7,707.42
  4. Step 4: Simplify right side
    20,864.07x = 241,178,582.71
  5. Step 5: Solve for x
    x = 241,178,582.71/20,864.07
  6. Step 6: Final answer
    x = 11,559.52

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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.