Home / 30,585.60-42,197.76-19,414.08

Finding the Fourth Proportional to 30,585.60, 42,197.76 and 19,414.08

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Solution

The fourth proportional to 30,585.60, 42,197.76 and 19,414.08 is: 26,784.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,585.60 : 42,197.76 = 19,414.08 : x
  2. Step 2: Convert to fraction form
    30,585.60/42,197.76 = 19,414.08/x
  3. Step 3: Cross multiply
    30,585.60x = 42,197.76 × 19,414.08
  4. Step 4: Simplify right side
    30,585.60x = 819,230,688.46
  5. Step 5: Solve for x
    x = 819,230,688.46/30,585.60
  6. Step 6: Final answer
    x = 26,784.85

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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.