Home / 30,834.14-42,515.64-22,779.45

Finding the Fourth Proportional to 30,834.14, 42,515.64 and 22,779.45

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Solution

The fourth proportional to 30,834.14, 42,515.64 and 22,779.45 is: 31,409.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,834.14 : 42,515.64 = 22,779.45 : x
  2. Step 2: Convert to fraction form
    30,834.14/42,515.64 = 22,779.45/x
  3. Step 3: Cross multiply
    30,834.14x = 42,515.64 × 22,779.45
  4. Step 4: Simplify right side
    30,834.14x = 968,482,895.60
  5. Step 5: Solve for x
    x = 968,482,895.60/30,834.14
  6. Step 6: Final answer
    x = 31,409.43

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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.