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Finding the Fourth Proportional to 12,453.85, 18,681.18 and 5,058.15

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Solution

The fourth proportional to 12,453.85, 18,681.18 and 5,058.15 is: 7,587.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,453.85 : 18,681.18 = 5,058.15 : x
  2. Step 2: Convert to fraction form
    12,453.85/18,681.18 = 5,058.15/x
  3. Step 3: Cross multiply
    12,453.85x = 18,681.18 × 5,058.15
  4. Step 4: Simplify right side
    12,453.85x = 94,492,210.62
  5. Step 5: Solve for x
    x = 94,492,210.62/12,453.85
  6. Step 6: Final answer
    x = 7,587.39

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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.