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Finding the Fourth Proportional to 35,706.40, 53,521.20 and 13,511.20

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Solution

The fourth proportional to 35,706.40, 53,521.20 and 13,511.20 is: 20,252.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,706.40 : 53,521.20 = 13,511.20 : x
  2. Step 2: Convert to fraction form
    35,706.40/53,521.20 = 13,511.20/x
  3. Step 3: Cross multiply
    35,706.40x = 53,521.20 × 13,511.20
  4. Step 4: Simplify right side
    35,706.40x = 723,135,637.44
  5. Step 5: Solve for x
    x = 723,135,637.44/35,706.40
  6. Step 6: Final answer
    x = 20,252.27

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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.