Home / 28,059.14-42,088.71-18,717.40

Finding the Fourth Proportional to 28,059.14, 42,088.71 and 18,717.40

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Solution

The fourth proportional to 28,059.14, 42,088.71 and 18,717.40 is: 28,076.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,059.14 : 42,088.71 = 18,717.40 : x
  2. Step 2: Convert to fraction form
    28,059.14/42,088.71 = 18,717.40/x
  3. Step 3: Cross multiply
    28,059.14x = 42,088.71 × 18,717.40
  4. Step 4: Simplify right side
    28,059.14x = 787,791,220.55
  5. Step 5: Solve for x
    x = 787,791,220.55/28,059.14
  6. Step 6: Final answer
    x = 28,076.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.