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Finding the Fourth Proportional to 12,572.80, 18,748.08 and 12,460.32

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Solution

The fourth proportional to 12,572.80, 18,748.08 and 12,460.32 is: 18,580.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,572.80 : 18,748.08 = 12,460.32 : x
  2. Step 2: Convert to fraction form
    12,572.80/18,748.08 = 12,460.32/x
  3. Step 3: Cross multiply
    12,572.80x = 18,748.08 × 12,460.32
  4. Step 4: Simplify right side
    12,572.80x = 233,607,076.19
  5. Step 5: Solve for x
    x = 233,607,076.19/12,572.80
  6. Step 6: Final answer
    x = 18,580.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.