Home / 28,515.06-42,773.34-13,518.66

Finding the Fourth Proportional to 28,515.06, 42,773.34 and 13,518.66

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Solution

The fourth proportional to 28,515.06, 42,773.34 and 13,518.66 is: 20,278.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,515.06 : 42,773.34 = 13,518.66 : x
  2. Step 2: Convert to fraction form
    28,515.06/42,773.34 = 13,518.66/x
  3. Step 3: Cross multiply
    28,515.06x = 42,773.34 × 13,518.66
  4. Step 4: Simplify right side
    28,515.06x = 578,238,240.52
  5. Step 5: Solve for x
    x = 578,238,240.52/28,515.06
  6. Step 6: Final answer
    x = 20,278.35

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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.