Home / 30,328.81-45,517.01-21,034.06

Finding the Fourth Proportional to 30,328.81, 45,517.01 and 21,034.06

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Solution

The fourth proportional to 30,328.81, 45,517.01 and 21,034.06 is: 31,567.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,328.81 : 45,517.01 = 21,034.06 : x
  2. Step 2: Convert to fraction form
    30,328.81/45,517.01 = 21,034.06/x
  3. Step 3: Cross multiply
    30,328.81x = 45,517.01 × 21,034.06
  4. Step 4: Simplify right side
    30,328.81x = 957,407,300.40
  5. Step 5: Solve for x
    x = 957,407,300.40/30,328.81
  6. Step 6: Final answer
    x = 31,567.59

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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.