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Finding the Fourth Proportional to 12,445.99, 18,670.80 and 4,548.89

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Solution

The fourth proportional to 12,445.99, 18,670.80 and 4,548.89 is: 6,824.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,445.99 : 18,670.80 = 4,548.89 : x
  2. Step 2: Convert to fraction form
    12,445.99/18,670.80 = 4,548.89/x
  3. Step 3: Cross multiply
    12,445.99x = 18,670.80 × 4,548.89
  4. Step 4: Simplify right side
    12,445.99x = 84,931,415.41
  5. Step 5: Solve for x
    x = 84,931,415.41/12,445.99
  6. Step 6: Final answer
    x = 6,824.00

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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.