Home / 15,027.12-20,718.18-10,303.20

Finding the Fourth Proportional to 15,027.12, 20,718.18 and 10,303.20

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Solution

The fourth proportional to 15,027.12, 20,718.18 and 10,303.20 is: 14,205.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,027.12 : 20,718.18 = 10,303.20 : x
  2. Step 2: Convert to fraction form
    15,027.12/20,718.18 = 10,303.20/x
  3. Step 3: Cross multiply
    15,027.12x = 20,718.18 × 10,303.20
  4. Step 4: Simplify right side
    15,027.12x = 213,463,552.18
  5. Step 5: Solve for x
    x = 213,463,552.18/15,027.12
  6. Step 6: Final answer
    x = 14,205.22

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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.