Home / 20,667.84-28,510.56-14,369.28

Finding the Fourth Proportional to 20,667.84, 28,510.56 and 14,369.28

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Solution

The fourth proportional to 20,667.84, 28,510.56 and 14,369.28 is: 19,821.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,667.84 : 28,510.56 = 14,369.28 : x
  2. Step 2: Convert to fraction form
    20,667.84/28,510.56 = 14,369.28/x
  3. Step 3: Cross multiply
    20,667.84x = 28,510.56 × 14,369.28
  4. Step 4: Simplify right side
    20,667.84x = 409,676,219.60
  5. Step 5: Solve for x
    x = 409,676,219.60/20,667.84
  6. Step 6: Final answer
    x = 19,821.92

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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.