Home / 15,113.12-20,849.63-9,438.01

Finding the Fourth Proportional to 15,113.12, 20,849.63 and 9,438.01

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Solution

The fourth proportional to 15,113.12, 20,849.63 and 9,438.01 is: 13,020.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,113.12 : 20,849.63 = 9,438.01 : x
  2. Step 2: Convert to fraction form
    15,113.12/20,849.63 = 9,438.01/x
  3. Step 3: Cross multiply
    15,113.12x = 20,849.63 × 9,438.01
  4. Step 4: Simplify right side
    15,113.12x = 196,778,995.31
  5. Step 5: Solve for x
    x = 196,778,995.31/15,113.12
  6. Step 6: Final answer
    x = 13,020.41

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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.