Home / 13,739.07-20,711.57-12,823.59

Finding the Fourth Proportional to 13,739.07, 20,711.57 and 12,823.59

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Solution

The fourth proportional to 13,739.07, 20,711.57 and 12,823.59 is: 19,331.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,739.07 : 20,711.57 = 12,823.59 : x
  2. Step 2: Convert to fraction form
    13,739.07/20,711.57 = 12,823.59/x
  3. Step 3: Cross multiply
    13,739.07x = 20,711.57 × 12,823.59
  4. Step 4: Simplify right side
    13,739.07x = 265,596,681.94
  5. Step 5: Solve for x
    x = 265,596,681.94/13,739.07
  6. Step 6: Final answer
    x = 19,331.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.