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Finding the Fourth Proportional to 35,431.50, 48,895.47 and 19,515.90

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Solution

The fourth proportional to 35,431.50, 48,895.47 and 19,515.90 is: 26,931.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,431.50 : 48,895.47 = 19,515.90 : x
  2. Step 2: Convert to fraction form
    35,431.50/48,895.47 = 19,515.90/x
  3. Step 3: Cross multiply
    35,431.50x = 48,895.47 × 19,515.90
  4. Step 4: Simplify right side
    35,431.50x = 954,239,102.97
  5. Step 5: Solve for x
    x = 954,239,102.97/35,431.50
  6. Step 6: Final answer
    x = 26,931.94

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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.