Home / 19,780.91-29,668.17-7,306.81

Finding the Fourth Proportional to 19,780.91, 29,668.17 and 7,306.81

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Solution

The fourth proportional to 19,780.91, 29,668.17 and 7,306.81 is: 10,959.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,780.91 : 29,668.17 = 7,306.81 : x
  2. Step 2: Convert to fraction form
    19,780.91/29,668.17 = 7,306.81/x
  3. Step 3: Cross multiply
    19,780.91x = 29,668.17 × 7,306.81
  4. Step 4: Simplify right side
    19,780.91x = 216,779,681.24
  5. Step 5: Solve for x
    x = 216,779,681.24/19,780.91
  6. Step 6: Final answer
    x = 10,959.03

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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.