Home / 21,628.86-32,417.16-10,518.90

Finding the Fourth Proportional to 21,628.86, 32,417.16 and 10,518.90

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Solution

The fourth proportional to 21,628.86, 32,417.16 and 10,518.90 is: 15,765.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,628.86 : 32,417.16 = 10,518.90 : x
  2. Step 2: Convert to fraction form
    21,628.86/32,417.16 = 10,518.90/x
  3. Step 3: Cross multiply
    21,628.86x = 32,417.16 × 10,518.90
  4. Step 4: Simplify right side
    21,628.86x = 340,992,864.32
  5. Step 5: Solve for x
    x = 340,992,864.32/21,628.86
  6. Step 6: Final answer
    x = 15,765.64

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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.