Home / 21,485.76-29,630.52-14,319.70

Finding the Fourth Proportional to 21,485.76, 29,630.52 and 14,319.70

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Solution

The fourth proportional to 21,485.76, 29,630.52 and 14,319.70 is: 19,747.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,485.76 : 29,630.52 = 14,319.70 : x
  2. Step 2: Convert to fraction form
    21,485.76/29,630.52 = 14,319.70/x
  3. Step 3: Cross multiply
    21,485.76x = 29,630.52 × 14,319.70
  4. Step 4: Simplify right side
    21,485.76x = 424,300,157.24
  5. Step 5: Solve for x
    x = 424,300,157.24/21,485.76
  6. Step 6: Final answer
    x = 19,747.97

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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.