Home / 19,771.61-27,314.45-12,981.74

Finding the Fourth Proportional to 19,771.61, 27,314.45 and 12,981.74

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Solution

The fourth proportional to 19,771.61, 27,314.45 and 12,981.74 is: 17,934.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,771.61 : 27,314.45 = 12,981.74 : x
  2. Step 2: Convert to fraction form
    19,771.61/27,314.45 = 12,981.74/x
  3. Step 3: Cross multiply
    19,771.61x = 27,314.45 × 12,981.74
  4. Step 4: Simplify right side
    19,771.61x = 354,588,935.34
  5. Step 5: Solve for x
    x = 354,588,935.34/19,771.61
  6. Step 6: Final answer
    x = 17,934.25

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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.