Home / 13,989.51-19,305.50-7,701.88

Finding the Fourth Proportional to 13,989.51, 19,305.50 and 7,701.88

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Solution

The fourth proportional to 13,989.51, 19,305.50 and 7,701.88 is: 10,628.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,989.51 : 19,305.50 = 7,701.88 : x
  2. Step 2: Convert to fraction form
    13,989.51/19,305.50 = 7,701.88/x
  3. Step 3: Cross multiply
    13,989.51x = 19,305.50 × 7,701.88
  4. Step 4: Simplify right side
    13,989.51x = 148,688,644.34
  5. Step 5: Solve for x
    x = 148,688,644.34/13,989.51
  6. Step 6: Final answer
    x = 10,628.58

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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.