Home / 21,430.63-29,574.07-11,999.35

Finding the Fourth Proportional to 21,430.63, 29,574.07 and 11,999.35

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Solution

The fourth proportional to 21,430.63, 29,574.07 and 11,999.35 is: 16,558.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,430.63 : 29,574.07 = 11,999.35 : x
  2. Step 2: Convert to fraction form
    21,430.63/29,574.07 = 11,999.35/x
  3. Step 3: Cross multiply
    21,430.63x = 29,574.07 × 11,999.35
  4. Step 4: Simplify right side
    21,430.63x = 354,869,616.85
  5. Step 5: Solve for x
    x = 354,869,616.85/21,430.63
  6. Step 6: Final answer
    x = 16,558.99

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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.