Home / 28,368.57-39,148.29-15,621.48

Finding the Fourth Proportional to 28,368.57, 39,148.29 and 15,621.48

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Solution

The fourth proportional to 28,368.57, 39,148.29 and 15,621.48 is: 21,557.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,368.57 : 39,148.29 = 15,621.48 : x
  2. Step 2: Convert to fraction form
    28,368.57/39,148.29 = 15,621.48/x
  3. Step 3: Cross multiply
    28,368.57x = 39,148.29 × 15,621.48
  4. Step 4: Simplify right side
    28,368.57x = 611,554,229.27
  5. Step 5: Solve for x
    x = 611,554,229.27/28,368.57
  6. Step 6: Final answer
    x = 21,557.46

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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.