Home / 13,407.21-18,501.66-7,438.52

Finding the Fourth Proportional to 13,407.21, 18,501.66 and 7,438.52

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Solution

The fourth proportional to 13,407.21, 18,501.66 and 7,438.52 is: 10,264.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,407.21 : 18,501.66 = 7,438.52 : x
  2. Step 2: Convert to fraction form
    13,407.21/18,501.66 = 7,438.52/x
  3. Step 3: Cross multiply
    13,407.21x = 18,501.66 × 7,438.52
  4. Step 4: Simplify right side
    13,407.21x = 137,624,875.43
  5. Step 5: Solve for x
    x = 137,624,875.43/13,407.21
  6. Step 6: Final answer
    x = 10,264.99

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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.