Home / 14,054.40-21,038.40-12,499.20

Finding the Fourth Proportional to 14,054.40, 21,038.40 and 12,499.20

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Solution

The fourth proportional to 14,054.40, 21,038.40 and 12,499.20 is: 18,710.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,054.40 : 21,038.40 = 12,499.20 : x
  2. Step 2: Convert to fraction form
    14,054.40/21,038.40 = 12,499.20/x
  3. Step 3: Cross multiply
    14,054.40x = 21,038.40 × 12,499.20
  4. Step 4: Simplify right side
    14,054.40x = 262,963,169.28
  5. Step 5: Solve for x
    x = 262,963,169.28/14,054.40
  6. Step 6: Final answer
    x = 18,710.38

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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.