Home / 13,790.42-19,030.80-7,502.79

Finding the Fourth Proportional to 13,790.42, 19,030.80 and 7,502.79

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Solution

The fourth proportional to 13,790.42, 19,030.80 and 7,502.79 is: 10,353.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,790.42 : 19,030.80 = 7,502.79 : x
  2. Step 2: Convert to fraction form
    13,790.42/19,030.80 = 7,502.79/x
  3. Step 3: Cross multiply
    13,790.42x = 19,030.80 × 7,502.79
  4. Step 4: Simplify right side
    13,790.42x = 142,784,095.93
  5. Step 5: Solve for x
    x = 142,784,095.93/13,790.42
  6. Step 6: Final answer
    x = 10,353.86

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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.