Home / 20,573.07-30,859.57-4,990.69

Finding the Fourth Proportional to 20,573.07, 30,859.57 and 4,990.69

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Solution

The fourth proportional to 20,573.07, 30,859.57 and 4,990.69 is: 7,486.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,573.07 : 30,859.57 = 4,990.69 : x
  2. Step 2: Convert to fraction form
    20,573.07/30,859.57 = 4,990.69/x
  3. Step 3: Cross multiply
    20,573.07x = 30,859.57 × 4,990.69
  4. Step 4: Simplify right side
    20,573.07x = 154,010,547.40
  5. Step 5: Solve for x
    x = 154,010,547.40/20,573.07
  6. Step 6: Final answer
    x = 7,486.03

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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.