Home / 18,689.60-25,790.40-10,730.72

Finding the Fourth Proportional to 18,689.60, 25,790.40 and 10,730.72

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Solution

The fourth proportional to 18,689.60, 25,790.40 and 10,730.72 is: 14,807.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,689.60 : 25,790.40 = 10,730.72 : x
  2. Step 2: Convert to fraction form
    18,689.60/25,790.40 = 10,730.72/x
  3. Step 3: Cross multiply
    18,689.60x = 25,790.40 × 10,730.72
  4. Step 4: Simplify right side
    18,689.60x = 276,749,561.09
  5. Step 5: Solve for x
    x = 276,749,561.09/18,689.60
  6. Step 6: Final answer
    x = 14,807.68

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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.