Home / 19,587.20-29,361.50-12,547.22

Finding the Fourth Proportional to 19,587.20, 29,361.50 and 12,547.22

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Solution

The fourth proportional to 19,587.20, 29,361.50 and 12,547.22 is: 18,808.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,587.20 : 29,361.50 = 12,547.22 : x
  2. Step 2: Convert to fraction form
    19,587.20/29,361.50 = 12,547.22/x
  3. Step 3: Cross multiply
    19,587.20x = 29,361.50 × 12,547.22
  4. Step 4: Simplify right side
    19,587.20x = 368,405,200.03
  5. Step 5: Solve for x
    x = 368,405,200.03/19,587.20
  6. Step 6: Final answer
    x = 18,808.47

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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.