Home / 15,527.96-21,430.42-9,155.96

Finding the Fourth Proportional to 15,527.96, 21,430.42 and 9,155.96

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Solution

The fourth proportional to 15,527.96, 21,430.42 and 9,155.96 is: 12,636.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,527.96 : 21,430.42 = 9,155.96 : x
  2. Step 2: Convert to fraction form
    15,527.96/21,430.42 = 9,155.96/x
  3. Step 3: Cross multiply
    15,527.96x = 21,430.42 × 9,155.96
  4. Step 4: Simplify right side
    15,527.96x = 196,216,068.30
  5. Step 5: Solve for x
    x = 196,216,068.30/15,527.96
  6. Step 6: Final answer
    x = 12,636.31

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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.