Home / 20,369.21-28,056.65-14,390.46

Finding the Fourth Proportional to 20,369.21, 28,056.65 and 14,390.46

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Solution

The fourth proportional to 20,369.21, 28,056.65 and 14,390.46 is: 19,821.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,369.21 : 28,056.65 = 14,390.46 : x
  2. Step 2: Convert to fraction form
    20,369.21/28,056.65 = 14,390.46/x
  3. Step 3: Cross multiply
    20,369.21x = 28,056.65 × 14,390.46
  4. Step 4: Simplify right side
    20,369.21x = 403,748,027.61
  5. Step 5: Solve for x
    x = 403,748,027.61/20,369.21
  6. Step 6: Final answer
    x = 19,821.49

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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.