Home / 14,158.40-21,259.20-10,875.20

Finding the Fourth Proportional to 14,158.40, 21,259.20 and 10,875.20

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Solution

The fourth proportional to 14,158.40, 21,259.20 and 10,875.20 is: 16,329.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,158.40 : 21,259.20 = 10,875.20 : x
  2. Step 2: Convert to fraction form
    14,158.40/21,259.20 = 10,875.20/x
  3. Step 3: Cross multiply
    14,158.40x = 21,259.20 × 10,875.20
  4. Step 4: Simplify right side
    14,158.40x = 231,198,051.84
  5. Step 5: Solve for x
    x = 231,198,051.84/14,158.40
  6. Step 6: Final answer
    x = 16,329.39

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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.