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Finding the Fourth Proportional to 14,001.51, 21,011.05 and 5,681.56

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Solution

The fourth proportional to 14,001.51, 21,011.05 and 5,681.56 is: 8,525.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,001.51 : 21,011.05 = 5,681.56 : x
  2. Step 2: Convert to fraction form
    14,001.51/21,011.05 = 5,681.56/x
  3. Step 3: Cross multiply
    14,001.51x = 21,011.05 × 5,681.56
  4. Step 4: Simplify right side
    14,001.51x = 119,375,495.81
  5. Step 5: Solve for x
    x = 119,375,495.81/14,001.51
  6. Step 6: Final answer
    x = 8,525.90

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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.