Home / 19,865.07-29,802.72-7,385.49

Finding the Fourth Proportional to 19,865.07, 29,802.72 and 7,385.49

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Solution

The fourth proportional to 19,865.07, 29,802.72 and 7,385.49 is: 11,080.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,865.07 : 29,802.72 = 7,385.49 : x
  2. Step 2: Convert to fraction form
    19,865.07/29,802.72 = 7,385.49/x
  3. Step 3: Cross multiply
    19,865.07x = 29,802.72 × 7,385.49
  4. Step 4: Simplify right side
    19,865.07x = 220,107,690.53
  5. Step 5: Solve for x
    x = 220,107,690.53/19,865.07
  6. Step 6: Final answer
    x = 11,080.14

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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.