Home / 28,830.34-39,787.05-18,216.10

Finding the Fourth Proportional to 28,830.34, 39,787.05 and 18,216.10

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Solution

The fourth proportional to 28,830.34, 39,787.05 and 18,216.10 is: 25,138.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,830.34 : 39,787.05 = 18,216.10 : x
  2. Step 2: Convert to fraction form
    28,830.34/39,787.05 = 18,216.10/x
  3. Step 3: Cross multiply
    28,830.34x = 39,787.05 × 18,216.10
  4. Step 4: Simplify right side
    28,830.34x = 724,764,881.51
  5. Step 5: Solve for x
    x = 724,764,881.51/28,830.34
  6. Step 6: Final answer
    x = 25,138.96

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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.