Home / 28,368.54-39,148.25-15,621.45

Finding the Fourth Proportional to 28,368.54, 39,148.25 and 15,621.45

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Solution

The fourth proportional to 28,368.54, 39,148.25 and 15,621.45 is: 21,557.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,368.54 : 39,148.25 = 15,621.45 : x
  2. Step 2: Convert to fraction form
    28,368.54/39,148.25 = 15,621.45/x
  3. Step 3: Cross multiply
    28,368.54x = 39,148.25 × 15,621.45
  4. Step 4: Simplify right side
    28,368.54x = 611,552,351.86
  5. Step 5: Solve for x
    x = 611,552,351.86/28,368.54
  6. Step 6: Final answer
    x = 21,557.41

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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.