Home / 19,290.71-26,613.66-12,117.55

Finding the Fourth Proportional to 19,290.71, 26,613.66 and 12,117.55

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Solution

The fourth proportional to 19,290.71, 26,613.66 and 12,117.55 is: 16,717.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,290.71 : 26,613.66 = 12,117.55 : x
  2. Step 2: Convert to fraction form
    19,290.71/26,613.66 = 12,117.55/x
  3. Step 3: Cross multiply
    19,290.71x = 26,613.66 × 12,117.55
  4. Step 4: Simplify right side
    19,290.71x = 322,492,384.54
  5. Step 5: Solve for x
    x = 322,492,384.54/19,290.71
  6. Step 6: Final answer
    x = 16,717.50

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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.