Home / 13,058.47-18,009.07-10,539.78

Finding the Fourth Proportional to 13,058.47, 18,009.07 and 10,539.78

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Solution

The fourth proportional to 13,058.47, 18,009.07 and 10,539.78 is: 14,535.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,058.47 : 18,009.07 = 10,539.78 : x
  2. Step 2: Convert to fraction form
    13,058.47/18,009.07 = 10,539.78/x
  3. Step 3: Cross multiply
    13,058.47x = 18,009.07 × 10,539.78
  4. Step 4: Simplify right side
    13,058.47x = 189,811,635.80
  5. Step 5: Solve for x
    x = 189,811,635.80/13,058.47
  6. Step 6: Final answer
    x = 14,535.52

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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.