Home / 14,078.60-21,117.90-8,907.40

Finding the Fourth Proportional to 14,078.60, 21,117.90 and 8,907.40

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Solution

The fourth proportional to 14,078.60, 21,117.90 and 8,907.40 is: 13,361.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,078.60 : 21,117.90 = 8,907.40 : x
  2. Step 2: Convert to fraction form
    14,078.60/21,117.90 = 8,907.40/x
  3. Step 3: Cross multiply
    14,078.60x = 21,117.90 × 8,907.40
  4. Step 4: Simplify right side
    14,078.60x = 188,105,582.46
  5. Step 5: Solve for x
    x = 188,105,582.46/14,078.60
  6. Step 6: Final answer
    x = 13,361.10

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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.