Home / 19,325.54-28,986.69-13,125.40

Finding the Fourth Proportional to 19,325.54, 28,986.69 and 13,125.40

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Solution

The fourth proportional to 19,325.54, 28,986.69 and 13,125.40 is: 19,686.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,325.54 : 28,986.69 = 13,125.40 : x
  2. Step 2: Convert to fraction form
    19,325.54/28,986.69 = 13,125.40/x
  3. Step 3: Cross multiply
    19,325.54x = 28,986.69 × 13,125.40
  4. Step 4: Simplify right side
    19,325.54x = 380,461,755.99
  5. Step 5: Solve for x
    x = 380,461,755.99/19,325.54
  6. Step 6: Final answer
    x = 19,686.99

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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.