Home / 15,605.32-21,533.80-8,890.42

Finding the Fourth Proportional to 15,605.32, 21,533.80 and 8,890.42

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Solution

The fourth proportional to 15,605.32, 21,533.80 and 8,890.42 is: 12,267.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,605.32 : 21,533.80 = 8,890.42 : x
  2. Step 2: Convert to fraction form
    15,605.32/21,533.80 = 8,890.42/x
  3. Step 3: Cross multiply
    15,605.32x = 21,533.80 × 8,890.42
  4. Step 4: Simplify right side
    15,605.32x = 191,444,526.20
  5. Step 5: Solve for x
    x = 191,444,526.20/15,605.32
  6. Step 6: Final answer
    x = 12,267.90

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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.