Home / 28,975.72-40,019.40-19,527.88

Finding the Fourth Proportional to 28,975.72, 40,019.40 and 19,527.88

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Solution

The fourth proportional to 28,975.72, 40,019.40 and 19,527.88 is: 26,970.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,975.72 : 40,019.40 = 19,527.88 : x
  2. Step 2: Convert to fraction form
    28,975.72/40,019.40 = 19,527.88/x
  3. Step 3: Cross multiply
    28,975.72x = 40,019.40 × 19,527.88
  4. Step 4: Simplify right side
    28,975.72x = 781,494,040.87
  5. Step 5: Solve for x
    x = 781,494,040.87/28,975.72
  6. Step 6: Final answer
    x = 26,970.65

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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.