Home / 19,428.80-29,102.08-10,985.60

Finding the Fourth Proportional to 19,428.80, 29,102.08 and 10,985.60

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Solution

The fourth proportional to 19,428.80, 29,102.08 and 10,985.60 is: 16,455.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,428.80 : 29,102.08 = 10,985.60 : x
  2. Step 2: Convert to fraction form
    19,428.80/29,102.08 = 10,985.60/x
  3. Step 3: Cross multiply
    19,428.80x = 29,102.08 × 10,985.60
  4. Step 4: Simplify right side
    19,428.80x = 319,703,810.05
  5. Step 5: Solve for x
    x = 319,703,810.05/19,428.80
  6. Step 6: Final answer
    x = 16,455.15

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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.