Home / 13,287.96-18,320.36-10,889.10

Finding the Fourth Proportional to 13,287.96, 18,320.36 and 10,889.10

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Solution

The fourth proportional to 13,287.96, 18,320.36 and 10,889.10 is: 15,013.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,287.96 : 18,320.36 = 10,889.10 : x
  2. Step 2: Convert to fraction form
    13,287.96/18,320.36 = 10,889.10/x
  3. Step 3: Cross multiply
    13,287.96x = 18,320.36 × 10,889.10
  4. Step 4: Simplify right side
    13,287.96x = 199,492,177.63
  5. Step 5: Solve for x
    x = 199,492,177.63/13,287.96
  6. Step 6: Final answer
    x = 15,013.00

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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.