Home / 30,709.91-42,364.64-18,752.55

Finding the Fourth Proportional to 30,709.91, 42,364.64 and 18,752.55

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Solution

The fourth proportional to 30,709.91, 42,364.64 and 18,752.55 is: 25,869.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,709.91 : 42,364.64 = 18,752.55 : x
  2. Step 2: Convert to fraction form
    30,709.91/42,364.64 = 18,752.55/x
  3. Step 3: Cross multiply
    30,709.91x = 42,364.64 × 18,752.55
  4. Step 4: Simplify right side
    30,709.91x = 794,445,029.83
  5. Step 5: Solve for x
    x = 794,445,029.83/30,709.91
  6. Step 6: Final answer
    x = 25,869.34

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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.