Home / 28,491-39,322.44-15,913.32

Finding the Fourth Proportional to 28,491, 39,322.44 and 15,913.32

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Solution

The fourth proportional to 28,491, 39,322.44 and 15,913.32 is: 21,963.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,491 : 39,322.44 = 15,913.32 : x
  2. Step 2: Convert to fraction form
    28,491/39,322.44 = 15,913.32/x
  3. Step 3: Cross multiply
    28,491x = 39,322.44 × 15,913.32
  4. Step 4: Simplify right side
    28,491x = 625,750,570.90
  5. Step 5: Solve for x
    x = 625,750,570.90/28,491
  6. Step 6: Final answer
    x = 21,963.10

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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.