Home / 30,816.50-42,528.29-18,880.49

Finding the Fourth Proportional to 30,816.50, 42,528.29 and 18,880.49

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Solution

The fourth proportional to 30,816.50, 42,528.29 and 18,880.49 is: 26,056.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,816.50 : 42,528.29 = 18,880.49 : x
  2. Step 2: Convert to fraction form
    30,816.50/42,528.29 = 18,880.49/x
  3. Step 3: Cross multiply
    30,816.50x = 42,528.29 × 18,880.49
  4. Step 4: Simplify right side
    30,816.50x = 802,955,072.18
  5. Step 5: Solve for x
    x = 802,955,072.18/30,816.50
  6. Step 6: Final answer
    x = 26,056.01

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.