Home / 35,421.84-48,861.36-21,278.16

Finding the Fourth Proportional to 35,421.84, 48,861.36 and 21,278.16

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Solution

The fourth proportional to 35,421.84, 48,861.36 and 21,278.16 is: 29,351.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,421.84 : 48,861.36 = 21,278.16 : x
  2. Step 2: Convert to fraction form
    35,421.84/48,861.36 = 21,278.16/x
  3. Step 3: Cross multiply
    35,421.84x = 48,861.36 × 21,278.16
  4. Step 4: Simplify right side
    35,421.84x = 1,039,679,835.90
  5. Step 5: Solve for x
    x = 1,039,679,835.90/35,421.84
  6. Step 6: Final answer
    x = 29,351.38

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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.