Home / 28,117-38,801.51-15,541.75

Finding the Fourth Proportional to 28,117, 38,801.51 and 15,541.75

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Solution

The fourth proportional to 28,117, 38,801.51 and 15,541.75 is: 21,447.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,117 : 38,801.51 = 15,541.75 : x
  2. Step 2: Convert to fraction form
    28,117/38,801.51 = 15,541.75/x
  3. Step 3: Cross multiply
    28,117x = 38,801.51 × 15,541.75
  4. Step 4: Simplify right side
    28,117x = 603,043,368.04
  5. Step 5: Solve for x
    x = 603,043,368.04/28,117
  6. Step 6: Final answer
    x = 21,447.64

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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.