Home / 27,378.30-37,780.53-15,440.93

Finding the Fourth Proportional to 27,378.30, 37,780.53 and 15,440.93

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Solution

The fourth proportional to 27,378.30, 37,780.53 and 15,440.93 is: 21,307.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,378.30 : 37,780.53 = 15,440.93 : x
  2. Step 2: Convert to fraction form
    27,378.30/37,780.53 = 15,440.93/x
  3. Step 3: Cross multiply
    27,378.30x = 37,780.53 × 15,440.93
  4. Step 4: Simplify right side
    27,378.30x = 583,366,413.96
  5. Step 5: Solve for x
    x = 583,366,413.96/27,378.30
  6. Step 6: Final answer
    x = 21,307.62

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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.