Home / 14,124.80-21,187.20-10,854.40

Finding the Fourth Proportional to 14,124.80, 21,187.20 and 10,854.40

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Solution

The fourth proportional to 14,124.80, 21,187.20 and 10,854.40 is: 16,281.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,124.80 : 21,187.20 = 10,854.40 : x
  2. Step 2: Convert to fraction form
    14,124.80/21,187.20 = 10,854.40/x
  3. Step 3: Cross multiply
    14,124.80x = 21,187.20 × 10,854.40
  4. Step 4: Simplify right side
    14,124.80x = 229,974,343.68
  5. Step 5: Solve for x
    x = 229,974,343.68/14,124.80
  6. Step 6: Final answer
    x = 16,281.60

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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.