Home / 30,774.34-42,455.28-19,435.96

Finding the Fourth Proportional to 30,774.34, 42,455.28 and 19,435.96

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Solution

The fourth proportional to 30,774.34, 42,455.28 and 19,435.96 is: 26,813.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,774.34 : 42,455.28 = 19,435.96 : x
  2. Step 2: Convert to fraction form
    30,774.34/42,455.28 = 19,435.96/x
  3. Step 3: Cross multiply
    30,774.34x = 42,455.28 × 19,435.96
  4. Step 4: Simplify right side
    30,774.34x = 825,159,123.87
  5. Step 5: Solve for x
    x = 825,159,123.87/30,774.34
  6. Step 6: Final answer
    x = 26,813.22

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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.