Home / 30,646.19-45,870.67-20,730.85

Finding the Fourth Proportional to 30,646.19, 45,870.67 and 20,730.85

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Solution

The fourth proportional to 30,646.19, 45,870.67 and 20,730.85 is: 31,029.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,646.19 : 45,870.67 = 20,730.85 : x
  2. Step 2: Convert to fraction form
    30,646.19/45,870.67 = 20,730.85/x
  3. Step 3: Cross multiply
    30,646.19x = 45,870.67 × 20,730.85
  4. Step 4: Simplify right side
    30,646.19x = 950,937,646.16
  5. Step 5: Solve for x
    x = 950,937,646.16/30,646.19
  6. Step 6: Final answer
    x = 31,029.56

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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.