Home / 13,722.81-18,937.47-7,435.18

Finding the Fourth Proportional to 13,722.81, 18,937.47 and 7,435.18

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Solution

The fourth proportional to 13,722.81, 18,937.47 and 7,435.18 is: 10,260.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,722.81 : 18,937.47 = 7,435.18 : x
  2. Step 2: Convert to fraction form
    13,722.81/18,937.47 = 7,435.18/x
  3. Step 3: Cross multiply
    13,722.81x = 18,937.47 × 7,435.18
  4. Step 4: Simplify right side
    13,722.81x = 140,803,498.19
  5. Step 5: Solve for x
    x = 140,803,498.19/13,722.81
  6. Step 6: Final answer
    x = 10,260.54

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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.