Home / 21,928.92-30,301.98-15,630.36

Finding the Fourth Proportional to 21,928.92, 30,301.98 and 15,630.36

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Solution

The fourth proportional to 21,928.92, 30,301.98 and 15,630.36 is: 21,598.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,928.92 : 30,301.98 = 15,630.36 : x
  2. Step 2: Convert to fraction form
    21,928.92/30,301.98 = 15,630.36/x
  3. Step 3: Cross multiply
    21,928.92x = 30,301.98 × 15,630.36
  4. Step 4: Simplify right side
    21,928.92x = 473,630,856.11
  5. Step 5: Solve for x
    x = 473,630,856.11/21,928.92
  6. Step 6: Final answer
    x = 21,598.46

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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.