Home / 15,803.60-21,809.28-8,730.32

Finding the Fourth Proportional to 15,803.60, 21,809.28 and 8,730.32

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Solution

The fourth proportional to 15,803.60, 21,809.28 and 8,730.32 is: 12,048.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,803.60 : 21,809.28 = 8,730.32 : x
  2. Step 2: Convert to fraction form
    15,803.60/21,809.28 = 8,730.32/x
  3. Step 3: Cross multiply
    15,803.60x = 21,809.28 × 8,730.32
  4. Step 4: Simplify right side
    15,803.60x = 190,401,993.37
  5. Step 5: Solve for x
    x = 190,401,993.37/15,803.60
  6. Step 6: Final answer
    x = 12,048.01

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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.