Home / 13,658.37-18,848.90-7,690.25

Finding the Fourth Proportional to 13,658.37, 18,848.90 and 7,690.25

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Solution

The fourth proportional to 13,658.37, 18,848.90 and 7,690.25 is: 10,612.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,658.37 : 18,848.90 = 7,690.25 : x
  2. Step 2: Convert to fraction form
    13,658.37/18,848.90 = 7,690.25/x
  3. Step 3: Cross multiply
    13,658.37x = 18,848.90 × 7,690.25
  4. Step 4: Simplify right side
    13,658.37x = 144,952,753.23
  5. Step 5: Solve for x
    x = 144,952,753.23/13,658.37
  6. Step 6: Final answer
    x = 10,612.74

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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.