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Finding the Fourth Proportional to 35,861.81, 53,799.98 and 12,490.07

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Solution

The fourth proportional to 35,861.81, 53,799.98 and 12,490.07 is: 18,737.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,861.81 : 53,799.98 = 12,490.07 : x
  2. Step 2: Convert to fraction form
    35,861.81/53,799.98 = 12,490.07/x
  3. Step 3: Cross multiply
    35,861.81x = 53,799.98 × 12,490.07
  4. Step 4: Simplify right side
    35,861.81x = 671,965,184.75
  5. Step 5: Solve for x
    x = 671,965,184.75/35,861.81
  6. Step 6: Final answer
    x = 18,737.63

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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.