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Finding the Fourth Proportional to 38,048.50, 52,507.11 and 21,281.50

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Solution

The fourth proportional to 38,048.50, 52,507.11 and 21,281.50 is: 29,368.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,048.50 : 52,507.11 = 21,281.50 : x
  2. Step 2: Convert to fraction form
    38,048.50/52,507.11 = 21,281.50/x
  3. Step 3: Cross multiply
    38,048.50x = 52,507.11 × 21,281.50
  4. Step 4: Simplify right side
    38,048.50x = 1,117,430,061.47
  5. Step 5: Solve for x
    x = 1,117,430,061.47/38,048.50
  6. Step 6: Final answer
    x = 29,368.57

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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.