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Finding the Fourth Proportional to 19,358.84, 26,726.84 and 12,655.68

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Solution

The fourth proportional to 19,358.84, 26,726.84 and 12,655.68 is: 17,472.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,358.84 : 26,726.84 = 12,655.68 : x
  2. Step 2: Convert to fraction form
    19,358.84/26,726.84 = 12,655.68/x
  3. Step 3: Cross multiply
    19,358.84x = 26,726.84 × 12,655.68
  4. Step 4: Simplify right side
    19,358.84x = 338,246,271.17
  5. Step 5: Solve for x
    x = 338,246,271.17/19,358.84
  6. Step 6: Final answer
    x = 17,472.45

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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.