Home / 19,985.34-29,981.25-7,507.02

Finding the Fourth Proportional to 19,985.34, 29,981.25 and 7,507.02

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Solution

The fourth proportional to 19,985.34, 29,981.25 and 7,507.02 is: 11,261.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,985.34 : 29,981.25 = 7,507.02 : x
  2. Step 2: Convert to fraction form
    19,985.34/29,981.25 = 7,507.02/x
  3. Step 3: Cross multiply
    19,985.34x = 29,981.25 × 7,507.02
  4. Step 4: Simplify right side
    19,985.34x = 225,069,843.38
  5. Step 5: Solve for x
    x = 225,069,843.38/19,985.34
  6. Step 6: Final answer
    x = 11,261.75

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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.