Home / 28,352.81-42,538.76-12,555.68

Finding the Fourth Proportional to 28,352.81, 42,538.76 and 12,555.68

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Solution

The fourth proportional to 28,352.81, 42,538.76 and 12,555.68 is: 18,837.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,352.81 : 42,538.76 = 12,555.68 : x
  2. Step 2: Convert to fraction form
    28,352.81/42,538.76 = 12,555.68/x
  3. Step 3: Cross multiply
    28,352.81x = 42,538.76 × 12,555.68
  4. Step 4: Simplify right side
    28,352.81x = 534,102,782.68
  5. Step 5: Solve for x
    x = 534,102,782.68/28,352.81
  6. Step 6: Final answer
    x = 18,837.74

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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.