Home / 28,256.89-38,993.73-15,510.07

Finding the Fourth Proportional to 28,256.89, 38,993.73 and 15,510.07

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Solution

The fourth proportional to 28,256.89, 38,993.73 and 15,510.07 is: 21,403.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,256.89 : 38,993.73 = 15,510.07 : x
  2. Step 2: Convert to fraction form
    28,256.89/38,993.73 = 15,510.07/x
  3. Step 3: Cross multiply
    28,256.89x = 38,993.73 × 15,510.07
  4. Step 4: Simplify right side
    28,256.89x = 604,795,481.86
  5. Step 5: Solve for x
    x = 604,795,481.86/28,256.89
  6. Step 6: Final answer
    x = 21,403.47

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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.