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Finding the Fourth Proportional to 35,607.61, 53,443.70 and 18,981.61

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Solution

The fourth proportional to 35,607.61, 53,443.70 and 18,981.61 is: 28,489.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,607.61 : 53,443.70 = 18,981.61 : x
  2. Step 2: Convert to fraction form
    35,607.61/53,443.70 = 18,981.61/x
  3. Step 3: Cross multiply
    35,607.61x = 53,443.70 × 18,981.61
  4. Step 4: Simplify right side
    35,607.61x = 1,014,447,470.36
  5. Step 5: Solve for x
    x = 1,014,447,470.36/35,607.61
  6. Step 6: Final answer
    x = 28,489.63

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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.