Home / 18,688.17-28,050.96-13,429.35

Finding the Fourth Proportional to 18,688.17, 28,050.96 and 13,429.35

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Solution

The fourth proportional to 18,688.17, 28,050.96 and 13,429.35 is: 20,157.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,688.17 : 28,050.96 = 13,429.35 : x
  2. Step 2: Convert to fraction form
    18,688.17/28,050.96 = 13,429.35/x
  3. Step 3: Cross multiply
    18,688.17x = 28,050.96 × 13,429.35
  4. Step 4: Simplify right side
    18,688.17x = 376,706,159.68
  5. Step 5: Solve for x
    x = 376,706,159.68/18,688.17
  6. Step 6: Final answer
    x = 20,157.47

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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.