Home / 28,192.50-38,888.55-18,632.47

Finding the Fourth Proportional to 28,192.50, 38,888.55 and 18,632.47

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Solution

The fourth proportional to 28,192.50, 38,888.55 and 18,632.47 is: 25,701.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,192.50 : 38,888.55 = 18,632.47 : x
  2. Step 2: Convert to fraction form
    28,192.50/38,888.55 = 18,632.47/x
  3. Step 3: Cross multiply
    28,192.50x = 38,888.55 × 18,632.47
  4. Step 4: Simplify right side
    28,192.50x = 724,589,741.22
  5. Step 5: Solve for x
    x = 724,589,741.22/28,192.50
  6. Step 6: Final answer
    x = 25,701.51

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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.