Home / 30,637.87-42,280.20-17,899.81

Finding the Fourth Proportional to 30,637.87, 42,280.20 and 17,899.81

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Solution

The fourth proportional to 30,637.87, 42,280.20 and 17,899.81 is: 24,701.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,637.87 : 42,280.20 = 17,899.81 : x
  2. Step 2: Convert to fraction form
    30,637.87/42,280.20 = 17,899.81/x
  3. Step 3: Cross multiply
    30,637.87x = 42,280.20 × 17,899.81
  4. Step 4: Simplify right side
    30,637.87x = 756,807,546.76
  5. Step 5: Solve for x
    x = 756,807,546.76/30,637.87
  6. Step 6: Final answer
    x = 24,701.70

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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.