Home / 13,407.51-18,501.45-7,438.95

Finding the Fourth Proportional to 13,407.51, 18,501.45 and 7,438.95

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Solution

The fourth proportional to 13,407.51, 18,501.45 and 7,438.95 is: 10,265.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,407.51 : 18,501.45 = 7,438.95 : x
  2. Step 2: Convert to fraction form
    13,407.51/18,501.45 = 7,438.95/x
  3. Step 3: Cross multiply
    13,407.51x = 18,501.45 × 7,438.95
  4. Step 4: Simplify right side
    13,407.51x = 137,631,361.48
  5. Step 5: Solve for x
    x = 137,631,361.48/13,407.51
  6. Step 6: Final answer
    x = 10,265.24

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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.