Home / 28,570.56-42,818.04-20,699.52

Finding the Fourth Proportional to 28,570.56, 42,818.04 and 20,699.52

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Solution

The fourth proportional to 28,570.56, 42,818.04 and 20,699.52 is: 31,021.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,570.56 : 42,818.04 = 20,699.52 : x
  2. Step 2: Convert to fraction form
    28,570.56/42,818.04 = 20,699.52/x
  3. Step 3: Cross multiply
    28,570.56x = 42,818.04 × 20,699.52
  4. Step 4: Simplify right side
    28,570.56x = 886,312,875.34
  5. Step 5: Solve for x
    x = 886,312,875.34/28,570.56
  6. Step 6: Final answer
    x = 31,021.89

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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.