Home / 20,277.03-30,389.40-8,417.40

Finding the Fourth Proportional to 20,277.03, 30,389.40 and 8,417.40

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Solution

The fourth proportional to 20,277.03, 30,389.40 and 8,417.40 is: 12,615.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,277.03 : 30,389.40 = 8,417.40 : x
  2. Step 2: Convert to fraction form
    20,277.03/30,389.40 = 8,417.40/x
  3. Step 3: Cross multiply
    20,277.03x = 30,389.40 × 8,417.40
  4. Step 4: Simplify right side
    20,277.03x = 255,799,735.56
  5. Step 5: Solve for x
    x = 255,799,735.56/20,277.03
  6. Step 6: Final answer
    x = 12,615.25

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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.