Home / 28,490.65-39,322.53-18,783.07

Finding the Fourth Proportional to 28,490.65, 39,322.53 and 18,783.07

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Solution

The fourth proportional to 28,490.65, 39,322.53 and 18,783.07 is: 25,924.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,490.65 : 39,322.53 = 18,783.07 : x
  2. Step 2: Convert to fraction form
    28,490.65/39,322.53 = 18,783.07/x
  3. Step 3: Cross multiply
    28,490.65x = 39,322.53 × 18,783.07
  4. Step 4: Simplify right side
    28,490.65x = 738,597,833.57
  5. Step 5: Solve for x
    x = 738,597,833.57/28,490.65
  6. Step 6: Final answer
    x = 25,924.22

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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.