Home / 13,730.24-18,947.60-7,442.64

Finding the Fourth Proportional to 13,730.24, 18,947.60 and 7,442.64

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Solution

The fourth proportional to 13,730.24, 18,947.60 and 7,442.64 is: 10,270.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,730.24 : 18,947.60 = 7,442.64 : x
  2. Step 2: Convert to fraction form
    13,730.24/18,947.60 = 7,442.64/x
  3. Step 3: Cross multiply
    13,730.24x = 18,947.60 × 7,442.64
  4. Step 4: Simplify right side
    13,730.24x = 141,020,165.66
  5. Step 5: Solve for x
    x = 141,020,165.66/13,730.24
  6. Step 6: Final answer
    x = 10,270.77

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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.