Home / 20,030.48-30,033-10,664.72

Finding the Fourth Proportional to 20,030.48, 30,033 and 10,664.72

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Solution

The fourth proportional to 20,030.48, 30,033 and 10,664.72 is: 15,990.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,030.48 : 30,033 = 10,664.72 : x
  2. Step 2: Convert to fraction form
    20,030.48/30,033 = 10,664.72/x
  3. Step 3: Cross multiply
    20,030.48x = 30,033 × 10,664.72
  4. Step 4: Simplify right side
    20,030.48x = 320,293,535.76
  5. Step 5: Solve for x
    x = 320,293,535.76/20,030.48
  6. Step 6: Final answer
    x = 15,990.31

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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.