Home / 21,430.75-32,166.91-10,345.25

Finding the Fourth Proportional to 21,430.75, 32,166.91 and 10,345.25

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Solution

The fourth proportional to 21,430.75, 32,166.91 and 10,345.25 is: 15,527.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,430.75 : 32,166.91 = 10,345.25 : x
  2. Step 2: Convert to fraction form
    21,430.75/32,166.91 = 10,345.25/x
  3. Step 3: Cross multiply
    21,430.75x = 32,166.91 × 10,345.25
  4. Step 4: Simplify right side
    21,430.75x = 332,774,725.68
  5. Step 5: Solve for x
    x = 332,774,725.68/21,430.75
  6. Step 6: Final answer
    x = 15,527.91

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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.