Home / 15,803.68-21,798.48-10,140.16

Finding the Fourth Proportional to 15,803.68, 21,798.48 and 10,140.16

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Solution

The fourth proportional to 15,803.68, 21,798.48 and 10,140.16 is: 13,986.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,803.68 : 21,798.48 = 10,140.16 : x
  2. Step 2: Convert to fraction form
    15,803.68/21,798.48 = 10,140.16/x
  3. Step 3: Cross multiply
    15,803.68x = 21,798.48 × 10,140.16
  4. Step 4: Simplify right side
    15,803.68x = 221,040,074.96
  5. Step 5: Solve for x
    x = 221,040,074.96/15,803.68
  6. Step 6: Final answer
    x = 13,986.62

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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.