Home / 20,210.40-30,315.60-10,368.90

Finding the Fourth Proportional to 20,210.40, 30,315.60 and 10,368.90

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Solution

The fourth proportional to 20,210.40, 30,315.60 and 10,368.90 is: 15,553.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,210.40 : 30,315.60 = 10,368.90 : x
  2. Step 2: Convert to fraction form
    20,210.40/30,315.60 = 10,368.90/x
  3. Step 3: Cross multiply
    20,210.40x = 30,315.60 × 10,368.90
  4. Step 4: Simplify right side
    20,210.40x = 314,339,424.84
  5. Step 5: Solve for x
    x = 314,339,424.84/20,210.40
  6. Step 6: Final answer
    x = 15,553.35

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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.