Home / 12,989.85-17,921.29-10,641.93

Finding the Fourth Proportional to 12,989.85, 17,921.29 and 10,641.93

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Solution

The fourth proportional to 12,989.85, 17,921.29 and 10,641.93 is: 14,682.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,989.85 : 17,921.29 = 10,641.93 : x
  2. Step 2: Convert to fraction form
    12,989.85/17,921.29 = 10,641.93/x
  3. Step 3: Cross multiply
    12,989.85x = 17,921.29 × 10,641.93
  4. Step 4: Simplify right side
    12,989.85x = 190,717,174.24
  5. Step 5: Solve for x
    x = 190,717,174.24/12,989.85
  6. Step 6: Final answer
    x = 14,682.01

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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.