Home / 28,560.51-42,868.44-13,779.81

Finding the Fourth Proportional to 28,560.51, 42,868.44 and 13,779.81

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Solution

The fourth proportional to 28,560.51, 42,868.44 and 13,779.81 is: 20,683.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,560.51 : 42,868.44 = 13,779.81 : x
  2. Step 2: Convert to fraction form
    28,560.51/42,868.44 = 13,779.81/x
  3. Step 3: Cross multiply
    28,560.51x = 42,868.44 × 13,779.81
  4. Step 4: Simplify right side
    28,560.51x = 590,718,958.20
  5. Step 5: Solve for x
    x = 590,718,958.20/28,560.51
  6. Step 6: Final answer
    x = 20,683.07

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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.