Home / 18,948.64-28,446.48-12,628.96

Finding the Fourth Proportional to 18,948.64, 28,446.48 and 12,628.96

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Solution

The fourth proportional to 18,948.64, 28,446.48 and 12,628.96 is: 18,959.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,948.64 : 28,446.48 = 12,628.96 : x
  2. Step 2: Convert to fraction form
    18,948.64/28,446.48 = 12,628.96/x
  3. Step 3: Cross multiply
    18,948.64x = 28,446.48 × 12,628.96
  4. Step 4: Simplify right side
    18,948.64x = 359,249,458.06
  5. Step 5: Solve for x
    x = 359,249,458.06/18,948.64
  6. Step 6: Final answer
    x = 18,959.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.