Home / 14,114.40-21,116.88-12,124.32

Finding the Fourth Proportional to 14,114.40, 21,116.88 and 12,124.32

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Solution

The fourth proportional to 14,114.40, 21,116.88 and 12,124.32 is: 18,139.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,114.40 : 21,116.88 = 12,124.32 : x
  2. Step 2: Convert to fraction form
    14,114.40/21,116.88 = 12,124.32/x
  3. Step 3: Cross multiply
    14,114.40x = 21,116.88 × 12,124.32
  4. Step 4: Simplify right side
    14,114.40x = 256,027,810.52
  5. Step 5: Solve for x
    x = 256,027,810.52/14,114.40
  6. Step 6: Final answer
    x = 18,139.48

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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.