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Finding the Fourth Proportional to 12,602.55, 18,903.06 and 5,580.51

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Solution

The fourth proportional to 12,602.55, 18,903.06 and 5,580.51 is: 8,370.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,602.55 : 18,903.06 = 5,580.51 : x
  2. Step 2: Convert to fraction form
    12,602.55/18,903.06 = 5,580.51/x
  3. Step 3: Cross multiply
    12,602.55x = 18,903.06 × 5,580.51
  4. Step 4: Simplify right side
    12,602.55x = 105,488,715.36
  5. Step 5: Solve for x
    x = 105,488,715.36/12,602.55
  6. Step 6: Final answer
    x = 8,370.43

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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.