Home / 18,730.08-25,812-13,415.76

Finding the Fourth Proportional to 18,730.08, 25,812 and 13,415.76

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Solution

The fourth proportional to 18,730.08, 25,812 and 13,415.76 is: 18,488.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,730.08 : 25,812 = 13,415.76 : x
  2. Step 2: Convert to fraction form
    18,730.08/25,812 = 13,415.76/x
  3. Step 3: Cross multiply
    18,730.08x = 25,812 × 13,415.76
  4. Step 4: Simplify right side
    18,730.08x = 346,287,597.12
  5. Step 5: Solve for x
    x = 346,287,597.12/18,730.08
  6. Step 6: Final answer
    x = 18,488.31

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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.