Home / 28,454.04-39,268.80-15,880.68

Finding the Fourth Proportional to 28,454.04, 39,268.80 and 15,880.68

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Solution

The fourth proportional to 28,454.04, 39,268.80 and 15,880.68 is: 21,916.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,454.04 : 39,268.80 = 15,880.68 : x
  2. Step 2: Convert to fraction form
    28,454.04/39,268.80 = 15,880.68/x
  3. Step 3: Cross multiply
    28,454.04x = 39,268.80 × 15,880.68
  4. Step 4: Simplify right side
    28,454.04x = 623,615,246.78
  5. Step 5: Solve for x
    x = 623,615,246.78/28,454.04
  6. Step 6: Final answer
    x = 21,916.58

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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.