Home / 14,139.72-19,511.40-8,170.92

Finding the Fourth Proportional to 14,139.72, 19,511.40 and 8,170.92

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Solution

The fourth proportional to 14,139.72, 19,511.40 and 8,170.92 is: 11,275.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,139.72 : 19,511.40 = 8,170.92 : x
  2. Step 2: Convert to fraction form
    14,139.72/19,511.40 = 8,170.92/x
  3. Step 3: Cross multiply
    14,139.72x = 19,511.40 × 8,170.92
  4. Step 4: Simplify right side
    14,139.72x = 159,426,088.49
  5. Step 5: Solve for x
    x = 159,426,088.49/14,139.72
  6. Step 6: Final answer
    x = 11,275.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.