Home / 15,303.36-21,115.20-9,016.32

Finding the Fourth Proportional to 15,303.36, 21,115.20 and 9,016.32

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Solution

The fourth proportional to 15,303.36, 21,115.20 and 9,016.32 is: 12,440.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,303.36 : 21,115.20 = 9,016.32 : x
  2. Step 2: Convert to fraction form
    15,303.36/21,115.20 = 9,016.32/x
  3. Step 3: Cross multiply
    15,303.36x = 21,115.20 × 9,016.32
  4. Step 4: Simplify right side
    15,303.36x = 190,381,400.06
  5. Step 5: Solve for x
    x = 190,381,400.06/15,303.36
  6. Step 6: Final answer
    x = 12,440.50

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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.