Home / 20,428.74-30,657.69-7,281.23

Finding the Fourth Proportional to 20,428.74, 30,657.69 and 7,281.23

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Solution

The fourth proportional to 20,428.74, 30,657.69 and 7,281.23 is: 10,927.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,428.74 : 30,657.69 = 7,281.23 : x
  2. Step 2: Convert to fraction form
    20,428.74/30,657.69 = 7,281.23/x
  3. Step 3: Cross multiply
    20,428.74x = 30,657.69 × 7,281.23
  4. Step 4: Simplify right side
    20,428.74x = 223,225,538.87
  5. Step 5: Solve for x
    x = 223,225,538.87/20,428.74
  6. Step 6: Final answer
    x = 10,927.03

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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.