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Finding the Fourth Proportional to 18,487.23, 25,515.01 and 10,530.19

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Solution

The fourth proportional to 18,487.23, 25,515.01 and 10,530.19 is: 14,533.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,487.23 : 25,515.01 = 10,530.19 : x
  2. Step 2: Convert to fraction form
    18,487.23/25,515.01 = 10,530.19/x
  3. Step 3: Cross multiply
    18,487.23x = 25,515.01 × 10,530.19
  4. Step 4: Simplify right side
    18,487.23x = 268,677,903.15
  5. Step 5: Solve for x
    x = 268,677,903.15/18,487.23
  6. Step 6: Final answer
    x = 14,533.16

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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.