Home / 13,775.43-19,011.60-7,807.49

Finding the Fourth Proportional to 13,775.43, 19,011.60 and 7,807.49

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Solution

The fourth proportional to 13,775.43, 19,011.60 and 7,807.49 is: 10,775.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,775.43 : 19,011.60 = 7,807.49 : x
  2. Step 2: Convert to fraction form
    13,775.43/19,011.60 = 7,807.49/x
  3. Step 3: Cross multiply
    13,775.43x = 19,011.60 × 7,807.49
  4. Step 4: Simplify right side
    13,775.43x = 148,432,742.79
  5. Step 5: Solve for x
    x = 148,432,742.79/13,775.43
  6. Step 6: Final answer
    x = 10,775.18

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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.