Home / 28,357.41-42,536.13-12,756.81

Finding the Fourth Proportional to 28,357.41, 42,536.13 and 12,756.81

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Solution

The fourth proportional to 28,357.41, 42,536.13 and 12,756.81 is: 19,135.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,357.41 : 42,536.13 = 12,756.81 : x
  2. Step 2: Convert to fraction form
    28,357.41/42,536.13 = 12,756.81/x
  3. Step 3: Cross multiply
    28,357.41x = 42,536.13 × 12,756.81
  4. Step 4: Simplify right side
    28,357.41x = 542,625,328.55
  5. Step 5: Solve for x
    x = 542,625,328.55/28,357.41
  6. Step 6: Final answer
    x = 19,135.22

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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.