Home / 19,148.81-28,728.27-8,758.13

Finding the Fourth Proportional to 19,148.81, 28,728.27 and 8,758.13

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Solution

The fourth proportional to 19,148.81, 28,728.27 and 8,758.13 is: 13,139.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,148.81 : 28,728.27 = 8,758.13 : x
  2. Step 2: Convert to fraction form
    19,148.81/28,728.27 = 8,758.13/x
  3. Step 3: Cross multiply
    19,148.81x = 28,728.27 × 8,758.13
  4. Step 4: Simplify right side
    19,148.81x = 251,605,779.69
  5. Step 5: Solve for x
    x = 251,605,779.69/19,148.81
  6. Step 6: Final answer
    x = 13,139.50

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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.