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Finding the Fourth Proportional to 13,990.50, 19,306.89 and 7,703.01

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Solution

The fourth proportional to 13,990.50, 19,306.89 and 7,703.01 is: 10,630.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,990.50 : 19,306.89 = 7,703.01 : x
  2. Step 2: Convert to fraction form
    13,990.50/19,306.89 = 7,703.01/x
  3. Step 3: Cross multiply
    13,990.50x = 19,306.89 × 7,703.01
  4. Step 4: Simplify right side
    13,990.50x = 148,721,166.74
  5. Step 5: Solve for x
    x = 148,721,166.74/13,990.50
  6. Step 6: Final answer
    x = 10,630.15

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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.