Home / 13,779.06-20,705.40-12,064.80

Finding the Fourth Proportional to 13,779.06, 20,705.40 and 12,064.80

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Solution

The fourth proportional to 13,779.06, 20,705.40 and 12,064.80 is: 18,129.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,779.06 : 20,705.40 = 12,064.80 : x
  2. Step 2: Convert to fraction form
    13,779.06/20,705.40 = 12,064.80/x
  3. Step 3: Cross multiply
    13,779.06x = 20,705.40 × 12,064.80
  4. Step 4: Simplify right side
    13,779.06x = 249,806,509.92
  5. Step 5: Solve for x
    x = 249,806,509.92/13,779.06
  6. Step 6: Final answer
    x = 18,129.43

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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.