Home / 28,309.36-39,054.36-18,868.72

Finding the Fourth Proportional to 28,309.36, 39,054.36 and 18,868.72

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Solution

The fourth proportional to 28,309.36, 39,054.36 and 18,868.72 is: 26,030.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,309.36 : 39,054.36 = 18,868.72 : x
  2. Step 2: Convert to fraction form
    28,309.36/39,054.36 = 18,868.72/x
  3. Step 3: Cross multiply
    28,309.36x = 39,054.36 × 18,868.72
  4. Step 4: Simplify right side
    28,309.36x = 736,905,783.62
  5. Step 5: Solve for x
    x = 736,905,783.62/28,309.36
  6. Step 6: Final answer
    x = 26,030.46

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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.