Home / 31,214.79-46,775.79-18,720.18

Finding the Fourth Proportional to 31,214.79, 46,775.79 and 18,720.18

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Solution

The fourth proportional to 31,214.79, 46,775.79 and 18,720.18 is: 28,052.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,214.79 : 46,775.79 = 18,720.18 : x
  2. Step 2: Convert to fraction form
    31,214.79/46,775.79 = 18,720.18/x
  3. Step 3: Cross multiply
    31,214.79x = 46,775.79 × 18,720.18
  4. Step 4: Simplify right side
    31,214.79x = 875,651,208.44
  5. Step 5: Solve for x
    x = 875,651,208.44/31,214.79
  6. Step 6: Final answer
    x = 28,052.45

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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.