Home / 19,146.99-28,720.51-9,287.72

Finding the Fourth Proportional to 19,146.99, 28,720.51 and 9,287.72

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Solution

The fourth proportional to 19,146.99, 28,720.51 and 9,287.72 is: 13,931.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,146.99 : 28,720.51 = 9,287.72 : x
  2. Step 2: Convert to fraction form
    19,146.99/28,720.51 = 9,287.72/x
  3. Step 3: Cross multiply
    19,146.99x = 28,720.51 × 9,287.72
  4. Step 4: Simplify right side
    19,146.99x = 266,747,888.32
  5. Step 5: Solve for x
    x = 266,747,888.32/19,146.99
  6. Step 6: Final answer
    x = 13,931.58

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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.