Home / 34,388.21-47,478.84-21,487.16

Finding the Fourth Proportional to 34,388.21, 47,478.84 and 21,487.16

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Solution

The fourth proportional to 34,388.21, 47,478.84 and 21,487.16 is: 29,666.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,388.21 : 47,478.84 = 21,487.16 : x
  2. Step 2: Convert to fraction form
    34,388.21/47,478.84 = 21,487.16/x
  3. Step 3: Cross multiply
    34,388.21x = 47,478.84 × 21,487.16
  4. Step 4: Simplify right side
    34,388.21x = 1,020,185,431.69
  5. Step 5: Solve for x
    x = 1,020,185,431.69/34,388.21
  6. Step 6: Final answer
    x = 29,666.72

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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.