Home / 20,804.72-28,681.70-14,079.69

Finding the Fourth Proportional to 20,804.72, 28,681.70 and 14,079.69

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Solution

The fourth proportional to 20,804.72, 28,681.70 and 14,079.69 is: 19,410.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,804.72 : 28,681.70 = 14,079.69 : x
  2. Step 2: Convert to fraction form
    20,804.72/28,681.70 = 14,079.69/x
  3. Step 3: Cross multiply
    20,804.72x = 28,681.70 × 14,079.69
  4. Step 4: Simplify right side
    20,804.72x = 403,829,374.27
  5. Step 5: Solve for x
    x = 403,829,374.27/20,804.72
  6. Step 6: Final answer
    x = 19,410.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.