Home / 19,509.49-29,269.70-7,830.91

Finding the Fourth Proportional to 19,509.49, 29,269.70 and 7,830.91

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Solution

The fourth proportional to 19,509.49, 29,269.70 and 7,830.91 is: 11,748.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,509.49 : 29,269.70 = 7,830.91 : x
  2. Step 2: Convert to fraction form
    19,509.49/29,269.70 = 7,830.91/x
  3. Step 3: Cross multiply
    19,509.49x = 29,269.70 × 7,830.91
  4. Step 4: Simplify right side
    19,509.49x = 229,208,200.92
  5. Step 5: Solve for x
    x = 229,208,200.92/19,509.49
  6. Step 6: Final answer
    x = 11,748.55

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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.