Home / 28,210.62-38,925.52-18,136.74

Finding the Fourth Proportional to 28,210.62, 38,925.52 and 18,136.74

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Solution

The fourth proportional to 28,210.62, 38,925.52 and 18,136.74 is: 25,025.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,210.62 : 38,925.52 = 18,136.74 : x
  2. Step 2: Convert to fraction form
    28,210.62/38,925.52 = 18,136.74/x
  3. Step 3: Cross multiply
    28,210.62x = 38,925.52 × 18,136.74
  4. Step 4: Simplify right side
    28,210.62x = 705,982,035.60
  5. Step 5: Solve for x
    x = 705,982,035.60/28,210.62
  6. Step 6: Final answer
    x = 25,025.40

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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.