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Finding the Fourth Proportional to 19,253.50, 26,569.91 and 10,421.50

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Solution

The fourth proportional to 19,253.50, 26,569.91 and 10,421.50 is: 14,381.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,253.50 : 26,569.91 = 10,421.50 : x
  2. Step 2: Convert to fraction form
    19,253.50/26,569.91 = 10,421.50/x
  3. Step 3: Cross multiply
    19,253.50x = 26,569.91 × 10,421.50
  4. Step 4: Simplify right side
    19,253.50x = 276,898,317.07
  5. Step 5: Solve for x
    x = 276,898,317.07/19,253.50
  6. Step 6: Final answer
    x = 14,381.71

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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.