Home / 47,403.84-71,122.08-21,126.72

Finding the Fourth Proportional to 47,403.84, 71,122.08 and 21,126.72

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Solution

The fourth proportional to 47,403.84, 71,122.08 and 21,126.72 is: 31,697.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,403.84 : 71,122.08 = 21,126.72 : x
  2. Step 2: Convert to fraction form
    47,403.84/71,122.08 = 21,126.72/x
  3. Step 3: Cross multiply
    47,403.84x = 71,122.08 × 21,126.72
  4. Step 4: Simplify right side
    47,403.84x = 1,502,576,269.98
  5. Step 5: Solve for x
    x = 1,502,576,269.98/47,403.84
  6. Step 6: Final answer
    x = 31,697.35

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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.