Home / 19,985.19-29,984.80-8,892.89

Finding the Fourth Proportional to 19,985.19, 29,984.80 and 8,892.89

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Solution

The fourth proportional to 19,985.19, 29,984.80 and 8,892.89 is: 13,342.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,985.19 : 29,984.80 = 8,892.89 : x
  2. Step 2: Convert to fraction form
    19,985.19/29,984.80 = 8,892.89/x
  3. Step 3: Cross multiply
    19,985.19x = 29,984.80 × 8,892.89
  4. Step 4: Simplify right side
    19,985.19x = 266,651,447.52
  5. Step 5: Solve for x
    x = 266,651,447.52/19,985.19
  6. Step 6: Final answer
    x = 13,342.45

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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.