Home / 20,839.67-31,271.66-12,535.55

Finding the Fourth Proportional to 20,839.67, 31,271.66 and 12,535.55

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Solution

The fourth proportional to 20,839.67, 31,271.66 and 12,535.55 is: 18,810.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,839.67 : 31,271.66 = 12,535.55 : x
  2. Step 2: Convert to fraction form
    20,839.67/31,271.66 = 12,535.55/x
  3. Step 3: Cross multiply
    20,839.67x = 31,271.66 × 12,535.55
  4. Step 4: Simplify right side
    20,839.67x = 392,007,457.51
  5. Step 5: Solve for x
    x = 392,007,457.51/20,839.67
  6. Step 6: Final answer
    x = 18,810.64

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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.