Home / 46,139.42-69,209.15-12,860.34

Finding the Fourth Proportional to 46,139.42, 69,209.15 and 12,860.34

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Solution

The fourth proportional to 46,139.42, 69,209.15 and 12,860.34 is: 19,290.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,139.42 : 69,209.15 = 12,860.34 : x
  2. Step 2: Convert to fraction form
    46,139.42/69,209.15 = 12,860.34/x
  3. Step 3: Cross multiply
    46,139.42x = 69,209.15 × 12,860.34
  4. Step 4: Simplify right side
    46,139.42x = 890,053,135.81
  5. Step 5: Solve for x
    x = 890,053,135.81/46,139.42
  6. Step 6: Final answer
    x = 19,290.52

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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.