Home / 30,554.03-42,085.70-21,585.97

Finding the Fourth Proportional to 30,554.03, 42,085.70 and 21,585.97

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Solution

The fourth proportional to 30,554.03, 42,085.70 and 21,585.97 is: 29,732.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,554.03 : 42,085.70 = 21,585.97 : x
  2. Step 2: Convert to fraction form
    30,554.03/42,085.70 = 21,585.97/x
  3. Step 3: Cross multiply
    30,554.03x = 42,085.70 × 21,585.97
  4. Step 4: Simplify right side
    30,554.03x = 908,460,444.48
  5. Step 5: Solve for x
    x = 908,460,444.48/30,554.03
  6. Step 6: Final answer
    x = 29,732.91

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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.