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Finding the Fourth Proportional to 15,117.60, 22,676.40 and 12,347.40

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Solution

The fourth proportional to 15,117.60, 22,676.40 and 12,347.40 is: 18,521.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,117.60 : 22,676.40 = 12,347.40 : x
  2. Step 2: Convert to fraction form
    15,117.60/22,676.40 = 12,347.40/x
  3. Step 3: Cross multiply
    15,117.60x = 22,676.40 × 12,347.40
  4. Step 4: Simplify right side
    15,117.60x = 279,994,581.36
  5. Step 5: Solve for x
    x = 279,994,581.36/15,117.60
  6. Step 6: Final answer
    x = 18,521.10

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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.