Home / 13,688.02-18,888.32-8,022.02

Finding the Fourth Proportional to 13,688.02, 18,888.32 and 8,022.02

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Solution

The fourth proportional to 13,688.02, 18,888.32 and 8,022.02 is: 11,069.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,688.02 : 18,888.32 = 8,022.02 : x
  2. Step 2: Convert to fraction form
    13,688.02/18,888.32 = 8,022.02/x
  3. Step 3: Cross multiply
    13,688.02x = 18,888.32 × 8,022.02
  4. Step 4: Simplify right side
    13,688.02x = 151,522,480.81
  5. Step 5: Solve for x
    x = 151,522,480.81/13,688.02
  6. Step 6: Final answer
    x = 11,069.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.