Home / 20,465.40-30,688.02-6,612.60

Finding the Fourth Proportional to 20,465.40, 30,688.02 and 6,612.60

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Solution

The fourth proportional to 20,465.40, 30,688.02 and 6,612.60 is: 9,915.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,465.40 : 30,688.02 = 6,612.60 : x
  2. Step 2: Convert to fraction form
    20,465.40/30,688.02 = 6,612.60/x
  3. Step 3: Cross multiply
    20,465.40x = 30,688.02 × 6,612.60
  4. Step 4: Simplify right side
    20,465.40x = 202,927,601.05
  5. Step 5: Solve for x
    x = 202,927,601.05/20,465.40
  6. Step 6: Final answer
    x = 9,915.64

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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.