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Finding the Fourth Proportional to 14,644.70, 21,967.05 and 13,031.90

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Solution

The fourth proportional to 14,644.70, 21,967.05 and 13,031.90 is: 19,547.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,644.70 : 21,967.05 = 13,031.90 : x
  2. Step 2: Convert to fraction form
    14,644.70/21,967.05 = 13,031.90/x
  3. Step 3: Cross multiply
    14,644.70x = 21,967.05 × 13,031.90
  4. Step 4: Simplify right side
    14,644.70x = 286,272,398.90
  5. Step 5: Solve for x
    x = 286,272,398.90/14,644.70
  6. Step 6: Final answer
    x = 19,547.85

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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.