Home / 13,459.89-18,581.93-9,439.06

Finding the Fourth Proportional to 13,459.89, 18,581.93 and 9,439.06

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Solution

The fourth proportional to 13,459.89, 18,581.93 and 9,439.06 is: 13,031.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,459.89 : 18,581.93 = 9,439.06 : x
  2. Step 2: Convert to fraction form
    13,459.89/18,581.93 = 9,439.06/x
  3. Step 3: Cross multiply
    13,459.89x = 18,581.93 × 9,439.06
  4. Step 4: Simplify right side
    13,459.89x = 175,395,929.33
  5. Step 5: Solve for x
    x = 175,395,929.33/13,459.89
  6. Step 6: Final answer
    x = 13,031.01

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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.