Home / 13,503.95-18,634.96-8,470.88

Finding the Fourth Proportional to 13,503.95, 18,634.96 and 8,470.88

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Solution

The fourth proportional to 13,503.95, 18,634.96 and 8,470.88 is: 11,689.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,503.95 : 18,634.96 = 8,470.88 : x
  2. Step 2: Convert to fraction form
    13,503.95/18,634.96 = 8,470.88/x
  3. Step 3: Cross multiply
    13,503.95x = 18,634.96 × 8,470.88
  4. Step 4: Simplify right side
    13,503.95x = 157,854,509.96
  5. Step 5: Solve for x
    x = 157,854,509.96/13,503.95
  6. Step 6: Final answer
    x = 11,689.51

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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.