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Finding the Fourth Proportional to 35,420.49, 53,143.03 and 15,712.88

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Solution

The fourth proportional to 35,420.49, 53,143.03 and 15,712.88 is: 23,574.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,420.49 : 53,143.03 = 15,712.88 : x
  2. Step 2: Convert to fraction form
    35,420.49/53,143.03 = 15,712.88/x
  3. Step 3: Cross multiply
    35,420.49x = 53,143.03 × 15,712.88
  4. Step 4: Simplify right side
    35,420.49x = 835,030,053.23
  5. Step 5: Solve for x
    x = 835,030,053.23/35,420.49
  6. Step 6: Final answer
    x = 23,574.78

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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.