Home / 13,118.84-19,701.74-12,590.32

Finding the Fourth Proportional to 13,118.84, 19,701.74 and 12,590.32

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Solution

The fourth proportional to 13,118.84, 19,701.74 and 12,590.32 is: 18,908.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,118.84 : 19,701.74 = 12,590.32 : x
  2. Step 2: Convert to fraction form
    13,118.84/19,701.74 = 12,590.32/x
  3. Step 3: Cross multiply
    13,118.84x = 19,701.74 × 12,590.32
  4. Step 4: Simplify right side
    13,118.84x = 248,051,211.16
  5. Step 5: Solve for x
    x = 248,051,211.16/13,118.84
  6. Step 6: Final answer
    x = 18,908.01

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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.