Home / 31,285.80-46,899.55-15,685.20

Finding the Fourth Proportional to 31,285.80, 46,899.55 and 15,685.20

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Solution

The fourth proportional to 31,285.80, 46,899.55 and 15,685.20 is: 23,513.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,285.80 : 46,899.55 = 15,685.20 : x
  2. Step 2: Convert to fraction form
    31,285.80/46,899.55 = 15,685.20/x
  3. Step 3: Cross multiply
    31,285.80x = 46,899.55 × 15,685.20
  4. Step 4: Simplify right side
    31,285.80x = 735,628,928.91
  5. Step 5: Solve for x
    x = 735,628,928.91/31,285.80
  6. Step 6: Final answer
    x = 23,513.19

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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.