Home / 20,017.67-30,030.80-5,978.79

Finding the Fourth Proportional to 20,017.67, 30,030.80 and 5,978.79

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Solution

The fourth proportional to 20,017.67, 30,030.80 and 5,978.79 is: 8,969.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,017.67 : 30,030.80 = 5,978.79 : x
  2. Step 2: Convert to fraction form
    20,017.67/30,030.80 = 5,978.79/x
  3. Step 3: Cross multiply
    20,017.67x = 30,030.80 × 5,978.79
  4. Step 4: Simplify right side
    20,017.67x = 179,547,816.84
  5. Step 5: Solve for x
    x = 179,547,816.84/20,017.67
  6. Step 6: Final answer
    x = 8,969.47

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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.