Home / 14,078.16-19,427.88-7,790.40

Finding the Fourth Proportional to 14,078.16, 19,427.88 and 7,790.40

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Solution

The fourth proportional to 14,078.16, 19,427.88 and 7,790.40 is: 10,750.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,078.16 : 19,427.88 = 7,790.40 : x
  2. Step 2: Convert to fraction form
    14,078.16/19,427.88 = 7,790.40/x
  3. Step 3: Cross multiply
    14,078.16x = 19,427.88 × 7,790.40
  4. Step 4: Simplify right side
    14,078.16x = 151,350,956.35
  5. Step 5: Solve for x
    x = 151,350,956.35/14,078.16
  6. Step 6: Final answer
    x = 10,750.76

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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.