Home / 19,325.07-28,987.38-7,638.21

Finding the Fourth Proportional to 19,325.07, 28,987.38 and 7,638.21

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Solution

The fourth proportional to 19,325.07, 28,987.38 and 7,638.21 is: 11,457.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,325.07 : 28,987.38 = 7,638.21 : x
  2. Step 2: Convert to fraction form
    19,325.07/28,987.38 = 7,638.21/x
  3. Step 3: Cross multiply
    19,325.07x = 28,987.38 × 7,638.21
  4. Step 4: Simplify right side
    19,325.07x = 221,411,695.79
  5. Step 5: Solve for x
    x = 221,411,695.79/19,325.07
  6. Step 6: Final answer
    x = 11,457.23

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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.