Home / 28,247.71-38,980.53-15,500.57

Finding the Fourth Proportional to 28,247.71, 38,980.53 and 15,500.57

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Solution

The fourth proportional to 28,247.71, 38,980.53 and 15,500.57 is: 21,390.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,247.71 : 38,980.53 = 15,500.57 : x
  2. Step 2: Convert to fraction form
    28,247.71/38,980.53 = 15,500.57/x
  3. Step 3: Cross multiply
    28,247.71x = 38,980.53 × 15,500.57
  4. Step 4: Simplify right side
    28,247.71x = 604,220,473.23
  5. Step 5: Solve for x
    x = 604,220,473.23/28,247.71
  6. Step 6: Final answer
    x = 21,390.07

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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.