Home / 21,058.08-31,589.28-7,208.16

Finding the Fourth Proportional to 21,058.08, 31,589.28 and 7,208.16

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Solution

The fourth proportional to 21,058.08, 31,589.28 and 7,208.16 is: 10,812.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,058.08 : 31,589.28 = 7,208.16 : x
  2. Step 2: Convert to fraction form
    21,058.08/31,589.28 = 7,208.16/x
  3. Step 3: Cross multiply
    21,058.08x = 31,589.28 × 7,208.16
  4. Step 4: Simplify right side
    21,058.08x = 227,700,584.52
  5. Step 5: Solve for x
    x = 227,700,584.52/21,058.08
  6. Step 6: Final answer
    x = 10,812.98

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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.