Home / 19,918.64-27,487.20-10,966.21

Finding the Fourth Proportional to 19,918.64, 27,487.20 and 10,966.21

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Solution

The fourth proportional to 19,918.64, 27,487.20 and 10,966.21 is: 15,133.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,918.64 : 27,487.20 = 10,966.21 : x
  2. Step 2: Convert to fraction form
    19,918.64/27,487.20 = 10,966.21/x
  3. Step 3: Cross multiply
    19,918.64x = 27,487.20 × 10,966.21
  4. Step 4: Simplify right side
    19,918.64x = 301,430,421.40
  5. Step 5: Solve for x
    x = 301,430,421.40/19,918.64
  6. Step 6: Final answer
    x = 15,133.08

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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.