Home / 15,431.45-21,292.67-9,058.77

Finding the Fourth Proportional to 15,431.45, 21,292.67 and 9,058.77

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Solution

The fourth proportional to 15,431.45, 21,292.67 and 9,058.77 is: 12,499.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,431.45 : 21,292.67 = 9,058.77 : x
  2. Step 2: Convert to fraction form
    15,431.45/21,292.67 = 9,058.77/x
  3. Step 3: Cross multiply
    15,431.45x = 21,292.67 × 9,058.77
  4. Step 4: Simplify right side
    15,431.45x = 192,885,422.86
  5. Step 5: Solve for x
    x = 192,885,422.86/15,431.45
  6. Step 6: Final answer
    x = 12,499.50

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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.