Home / 13,117.40-19,676.10-12,898.70

Finding the Fourth Proportional to 13,117.40, 19,676.10 and 12,898.70

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Solution

The fourth proportional to 13,117.40, 19,676.10 and 12,898.70 is: 19,348.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,117.40 : 19,676.10 = 12,898.70 : x
  2. Step 2: Convert to fraction form
    13,117.40/19,676.10 = 12,898.70/x
  3. Step 3: Cross multiply
    13,117.40x = 19,676.10 × 12,898.70
  4. Step 4: Simplify right side
    13,117.40x = 253,796,111.07
  5. Step 5: Solve for x
    x = 253,796,111.07/13,117.40
  6. Step 6: Final answer
    x = 19,348.05

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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.