Home / 15,809.42-21,809.54-9,432.36

Finding the Fourth Proportional to 15,809.42, 21,809.54 and 9,432.36

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Solution

The fourth proportional to 15,809.42, 21,809.54 and 9,432.36 is: 13,012.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,809.42 : 21,809.54 = 9,432.36 : x
  2. Step 2: Convert to fraction form
    15,809.42/21,809.54 = 9,432.36/x
  3. Step 3: Cross multiply
    15,809.42x = 21,809.54 × 9,432.36
  4. Step 4: Simplify right side
    15,809.42x = 205,715,403.24
  5. Step 5: Solve for x
    x = 205,715,403.24/15,809.42
  6. Step 6: Final answer
    x = 13,012.21

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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.