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Finding the Fourth Proportional to 34,670.60, 47,846.60 and 21,056.30

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Solution

The fourth proportional to 34,670.60, 47,846.60 and 21,056.30 is: 29,058.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,670.60 : 47,846.60 = 21,056.30 : x
  2. Step 2: Convert to fraction form
    34,670.60/47,846.60 = 21,056.30/x
  3. Step 3: Cross multiply
    34,670.60x = 47,846.60 × 21,056.30
  4. Step 4: Simplify right side
    34,670.60x = 1,007,472,019.07
  5. Step 5: Solve for x
    x = 1,007,472,019.07/34,670.60
  6. Step 6: Final answer
    x = 29,058.40

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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.