Home / 21,148.14-31,640.10-14,554.32

Finding the Fourth Proportional to 21,148.14, 31,640.10 and 14,554.32

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Solution

The fourth proportional to 21,148.14, 31,640.10 and 14,554.32 is: 21,774.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,148.14 : 31,640.10 = 14,554.32 : x
  2. Step 2: Convert to fraction form
    21,148.14/31,640.10 = 14,554.32/x
  3. Step 3: Cross multiply
    21,148.14x = 31,640.10 × 14,554.32
  4. Step 4: Simplify right side
    21,148.14x = 460,500,140.23
  5. Step 5: Solve for x
    x = 460,500,140.23/21,148.14
  6. Step 6: Final answer
    x = 21,774.97

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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.