Home / 31,107.60-46,661.40-17,985.60

Finding the Fourth Proportional to 31,107.60, 46,661.40 and 17,985.60

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Solution

The fourth proportional to 31,107.60, 46,661.40 and 17,985.60 is: 26,978.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,107.60 : 46,661.40 = 17,985.60 : x
  2. Step 2: Convert to fraction form
    31,107.60/46,661.40 = 17,985.60/x
  3. Step 3: Cross multiply
    31,107.60x = 46,661.40 × 17,985.60
  4. Step 4: Simplify right side
    31,107.60x = 839,233,275.84
  5. Step 5: Solve for x
    x = 839,233,275.84/31,107.60
  6. Step 6: Final answer
    x = 26,978.40

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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.