Home / 12,870.09-19,288.26-6,624.72

Finding the Fourth Proportional to 12,870.09, 19,288.26 and 6,624.72

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Solution

The fourth proportional to 12,870.09, 19,288.26 and 6,624.72 is: 9,928.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,870.09 : 19,288.26 = 6,624.72 : x
  2. Step 2: Convert to fraction form
    12,870.09/19,288.26 = 6,624.72/x
  3. Step 3: Cross multiply
    12,870.09x = 19,288.26 × 6,624.72
  4. Step 4: Simplify right side
    12,870.09x = 127,779,321.79
  5. Step 5: Solve for x
    x = 127,779,321.79/12,870.09
  6. Step 6: Final answer
    x = 9,928.39

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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.