Home / 10,904.22-15,047.67-6,428.16

Finding the Fourth Proportional to 10,904.22, 15,047.67 and 6,428.16

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Solution

The fourth proportional to 10,904.22, 15,047.67 and 6,428.16 is: 8,870.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,904.22 : 15,047.67 = 6,428.16 : x
  2. Step 2: Convert to fraction form
    10,904.22/15,047.67 = 6,428.16/x
  3. Step 3: Cross multiply
    10,904.22x = 15,047.67 × 6,428.16
  4. Step 4: Simplify right side
    10,904.22x = 96,728,830.39
  5. Step 5: Solve for x
    x = 96,728,830.39/10,904.22
  6. Step 6: Final answer
    x = 8,870.77

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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.