Home / 28,319.61-39,081.21-15,573.62

Finding the Fourth Proportional to 28,319.61, 39,081.21 and 15,573.62

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Solution

The fourth proportional to 28,319.61, 39,081.21 and 15,573.62 is: 21,491.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,319.61 : 39,081.21 = 15,573.62 : x
  2. Step 2: Convert to fraction form
    28,319.61/39,081.21 = 15,573.62/x
  3. Step 3: Cross multiply
    28,319.61x = 39,081.21 × 15,573.62
  4. Step 4: Simplify right side
    28,319.61x = 608,635,718.27
  5. Step 5: Solve for x
    x = 608,635,718.27/28,319.61
  6. Step 6: Final answer
    x = 21,491.67

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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.