Home / 19,988.06-29,985.74-9,998.03

Finding the Fourth Proportional to 19,988.06, 29,985.74 and 9,998.03

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Solution

The fourth proportional to 19,988.06, 29,985.74 and 9,998.03 is: 14,998.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,988.06 : 29,985.74 = 9,998.03 : x
  2. Step 2: Convert to fraction form
    19,988.06/29,985.74 = 9,998.03/x
  3. Step 3: Cross multiply
    19,988.06x = 29,985.74 × 9,998.03
  4. Step 4: Simplify right side
    19,988.06x = 299,798,128.17
  5. Step 5: Solve for x
    x = 299,798,128.17/19,988.06
  6. Step 6: Final answer
    x = 14,998.86

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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.