Home / 21,316.16-31,955.60-8,828.32

Finding the Fourth Proportional to 21,316.16, 31,955.60 and 8,828.32

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Solution

The fourth proportional to 21,316.16, 31,955.60 and 8,828.32 is: 13,234.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,316.16 : 31,955.60 = 8,828.32 : x
  2. Step 2: Convert to fraction form
    21,316.16/31,955.60 = 8,828.32/x
  3. Step 3: Cross multiply
    21,316.16x = 31,955.60 × 8,828.32
  4. Step 4: Simplify right side
    21,316.16x = 282,114,262.59
  5. Step 5: Solve for x
    x = 282,114,262.59/21,316.16
  6. Step 6: Final answer
    x = 13,234.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.