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Finding the Fourth Proportional to 38,433.70, 53,038.49 and 21,666.70

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Solution

The fourth proportional to 38,433.70, 53,038.49 and 21,666.70 is: 29,900.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,433.70 : 53,038.49 = 21,666.70 : x
  2. Step 2: Convert to fraction form
    38,433.70/53,038.49 = 21,666.70/x
  3. Step 3: Cross multiply
    38,433.70x = 53,038.49 × 21,666.70
  4. Step 4: Simplify right side
    38,433.70x = 1,149,168,677.76
  5. Step 5: Solve for x
    x = 1,149,168,677.76/38,433.70
  6. Step 6: Final answer
    x = 29,900.03

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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.