Home / 12,539,967.40-18,809,951.10-10,626,779.80

Finding the Fourth Proportional to 12,539,967.40, 18,809,951.10 and 10,626,779.80

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Solution

The fourth proportional to 12,539,967.40, 18,809,951.10 and 10,626,779.80 is: 15,940,169.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,539,967.40 : 18,809,951.10 = 10,626,779.80 : x
  2. Step 2: Convert to fraction form
    12,539,967.40/18,809,951.10 = 10,626,779.80/x
  3. Step 3: Cross multiply
    12,539,967.40x = 18,809,951.10 × 10,626,779.80
  4. Step 4: Simplify right side
    12,539,967.40x = 199,889,208,388,467.81
  5. Step 5: Solve for x
    x = 199,889,208,388,467.81/12,539,967.40
  6. Step 6: Final answer
    x = 15,940,169.70

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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.