Home / 13,373.81-18,455.63-7,405.35

Finding the Fourth Proportional to 13,373.81, 18,455.63 and 7,405.35

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Solution

The fourth proportional to 13,373.81, 18,455.63 and 7,405.35 is: 10,219.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,373.81 : 18,455.63 = 7,405.35 : x
  2. Step 2: Convert to fraction form
    13,373.81/18,455.63 = 7,405.35/x
  3. Step 3: Cross multiply
    13,373.81x = 18,455.63 × 7,405.35
  4. Step 4: Simplify right side
    13,373.81x = 136,670,376.55
  5. Step 5: Solve for x
    x = 136,670,376.55/13,373.81
  6. Step 6: Final answer
    x = 10,219.26

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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.