Home / 15,458.04-21,315.96-9,169.20

Finding the Fourth Proportional to 15,458.04, 21,315.96 and 9,169.20

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Solution

The fourth proportional to 15,458.04, 21,315.96 and 9,169.20 is: 12,643.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,458.04 : 21,315.96 = 9,169.20 : x
  2. Step 2: Convert to fraction form
    15,458.04/21,315.96 = 9,169.20/x
  3. Step 3: Cross multiply
    15,458.04x = 21,315.96 × 9,169.20
  4. Step 4: Simplify right side
    15,458.04x = 195,450,300.43
  5. Step 5: Solve for x
    x = 195,450,300.43/15,458.04
  6. Step 6: Final answer
    x = 12,643.93

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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.