Home / 13,777.40-19,011.30-7,808.60

Finding the Fourth Proportional to 13,777.40, 19,011.30 and 7,808.60

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Solution

The fourth proportional to 13,777.40, 19,011.30 and 7,808.60 is: 10,775.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,777.40 : 19,011.30 = 7,808.60 : x
  2. Step 2: Convert to fraction form
    13,777.40/19,011.30 = 7,808.60/x
  3. Step 3: Cross multiply
    13,777.40x = 19,011.30 × 7,808.60
  4. Step 4: Simplify right side
    13,777.40x = 148,451,637.18
  5. Step 5: Solve for x
    x = 148,451,637.18/13,777.40
  6. Step 6: Final answer
    x = 10,775.01

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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.