Home / 30,001.59-45,002.40-7,814.91

Finding the Fourth Proportional to 30,001.59, 45,002.40 and 7,814.91

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Solution

The fourth proportional to 30,001.59, 45,002.40 and 7,814.91 is: 11,722.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,001.59 : 45,002.40 = 7,814.91 : x
  2. Step 2: Convert to fraction form
    30,001.59/45,002.40 = 7,814.91/x
  3. Step 3: Cross multiply
    30,001.59x = 45,002.40 × 7,814.91
  4. Step 4: Simplify right side
    30,001.59x = 351,689,705.78
  5. Step 5: Solve for x
    x = 351,689,705.78/30,001.59
  6. Step 6: Final answer
    x = 11,722.37

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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.