Home / 14,139.10-21,208.65-12,583.90

Finding the Fourth Proportional to 14,139.10, 21,208.65 and 12,583.90

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Solution

The fourth proportional to 14,139.10, 21,208.65 and 12,583.90 is: 18,875.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,139.10 : 21,208.65 = 12,583.90 : x
  2. Step 2: Convert to fraction form
    14,139.10/21,208.65 = 12,583.90/x
  3. Step 3: Cross multiply
    14,139.10x = 21,208.65 × 12,583.90
  4. Step 4: Simplify right side
    14,139.10x = 266,887,530.74
  5. Step 5: Solve for x
    x = 266,887,530.74/14,139.10
  6. Step 6: Final answer
    x = 18,875.85

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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.