Home / 13,374.81-18,457.01-7,406.35

Finding the Fourth Proportional to 13,374.81, 18,457.01 and 7,406.35

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Solution

The fourth proportional to 13,374.81, 18,457.01 and 7,406.35 is: 10,220.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,374.81 : 18,457.01 = 7,406.35 : x
  2. Step 2: Convert to fraction form
    13,374.81/18,457.01 = 7,406.35/x
  3. Step 3: Cross multiply
    13,374.81x = 18,457.01 × 7,406.35
  4. Step 4: Simplify right side
    13,374.81x = 136,699,076.01
  5. Step 5: Solve for x
    x = 136,699,076.01/13,374.81
  6. Step 6: Final answer
    x = 10,220.64

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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.