Home / 20,030.61-30,047.62-5,239.50

Finding the Fourth Proportional to 20,030.61, 30,047.62 and 5,239.50

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Solution

The fourth proportional to 20,030.61, 30,047.62 and 5,239.50 is: 7,859.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,030.61 : 30,047.62 = 5,239.50 : x
  2. Step 2: Convert to fraction form
    20,030.61/30,047.62 = 5,239.50/x
  3. Step 3: Cross multiply
    20,030.61x = 30,047.62 × 5,239.50
  4. Step 4: Simplify right side
    20,030.61x = 157,434,614.39
  5. Step 5: Solve for x
    x = 157,434,614.39/20,030.61
  6. Step 6: Final answer
    x = 7,859.70

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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.