Home / 28,392.21-39,139.23-18,182.16

Finding the Fourth Proportional to 28,392.21, 39,139.23 and 18,182.16

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Solution

The fourth proportional to 28,392.21, 39,139.23 and 18,182.16 is: 25,064.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,392.21 : 39,139.23 = 18,182.16 : x
  2. Step 2: Convert to fraction form
    28,392.21/39,139.23 = 18,182.16/x
  3. Step 3: Cross multiply
    28,392.21x = 39,139.23 × 18,182.16
  4. Step 4: Simplify right side
    28,392.21x = 711,635,742.14
  5. Step 5: Solve for x
    x = 711,635,742.14/28,392.21
  6. Step 6: Final answer
    x = 25,064.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.