Home / 20,040.36-30,009.69-12,030.15

Finding the Fourth Proportional to 20,040.36, 30,009.69 and 12,030.15

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Solution

The fourth proportional to 20,040.36, 30,009.69 and 12,030.15 is: 18,014.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,040.36 : 30,009.69 = 12,030.15 : x
  2. Step 2: Convert to fraction form
    20,040.36/30,009.69 = 12,030.15/x
  3. Step 3: Cross multiply
    20,040.36x = 30,009.69 × 12,030.15
  4. Step 4: Simplify right side
    20,040.36x = 361,020,931.48
  5. Step 5: Solve for x
    x = 361,020,931.48/20,040.36
  6. Step 6: Final answer
    x = 18,014.69

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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.