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Finding the Fourth Proportional to 13,492.32, 18,619.40 and 7,903.32

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Solution

The fourth proportional to 13,492.32, 18,619.40 and 7,903.32 is: 10,906.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,492.32 : 18,619.40 = 7,903.32 : x
  2. Step 2: Convert to fraction form
    13,492.32/18,619.40 = 7,903.32/x
  3. Step 3: Cross multiply
    13,492.32x = 18,619.40 × 7,903.32
  4. Step 4: Simplify right side
    13,492.32x = 147,154,943.79
  5. Step 5: Solve for x
    x = 147,154,943.79/13,492.32
  6. Step 6: Final answer
    x = 10,906.57

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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.