Home / 28,367.40-39,141.09-16,430.03

Finding the Fourth Proportional to 28,367.40, 39,141.09 and 16,430.03

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Solution

The fourth proportional to 28,367.40, 39,141.09 and 16,430.03 is: 22,670.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,367.40 : 39,141.09 = 16,430.03 : x
  2. Step 2: Convert to fraction form
    28,367.40/39,141.09 = 16,430.03/x
  3. Step 3: Cross multiply
    28,367.40x = 39,141.09 × 16,430.03
  4. Step 4: Simplify right side
    28,367.40x = 643,089,282.93
  5. Step 5: Solve for x
    x = 643,089,282.93/28,367.40
  6. Step 6: Final answer
    x = 22,670.01

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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.