Home / 20,210.10-30,315.15-10,368.60

Finding the Fourth Proportional to 20,210.10, 30,315.15 and 10,368.60

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Solution

The fourth proportional to 20,210.10, 30,315.15 and 10,368.60 is: 15,552.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,210.10 : 30,315.15 = 10,368.60 : x
  2. Step 2: Convert to fraction form
    20,210.10/30,315.15 = 10,368.60/x
  3. Step 3: Cross multiply
    20,210.10x = 30,315.15 × 10,368.60
  4. Step 4: Simplify right side
    20,210.10x = 314,325,664.29
  5. Step 5: Solve for x
    x = 314,325,664.29/20,210.10
  6. Step 6: Final answer
    x = 15,552.90

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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.