Home / 19,681.21-29,521.70-4,890.12

Finding the Fourth Proportional to 19,681.21, 29,521.70 and 4,890.12

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Solution

The fourth proportional to 19,681.21, 29,521.70 and 4,890.12 is: 7,335.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,681.21 : 29,521.70 = 4,890.12 : x
  2. Step 2: Convert to fraction form
    19,681.21/29,521.70 = 4,890.12/x
  3. Step 3: Cross multiply
    19,681.21x = 29,521.70 × 4,890.12
  4. Step 4: Simplify right side
    19,681.21x = 144,364,667.83
  5. Step 5: Solve for x
    x = 144,364,667.83/19,681.21
  6. Step 6: Final answer
    x = 7,335.15

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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.