Home / 28,630.96-42,929.60-13,040.08

Finding the Fourth Proportional to 28,630.96, 42,929.60 and 13,040.08

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Solution

The fourth proportional to 28,630.96, 42,929.60 and 13,040.08 is: 19,552.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,630.96 : 42,929.60 = 13,040.08 : x
  2. Step 2: Convert to fraction form
    28,630.96/42,929.60 = 13,040.08/x
  3. Step 3: Cross multiply
    28,630.96x = 42,929.60 × 13,040.08
  4. Step 4: Simplify right side
    28,630.96x = 559,805,418.37
  5. Step 5: Solve for x
    x = 559,805,418.37/28,630.96
  6. Step 6: Final answer
    x = 19,552.45

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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.