Home / 15,430.70-21,294.26-8,356.98

Finding the Fourth Proportional to 15,430.70, 21,294.26 and 8,356.98

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Solution

The fourth proportional to 15,430.70, 21,294.26 and 8,356.98 is: 11,532.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,430.70 : 21,294.26 = 8,356.98 : x
  2. Step 2: Convert to fraction form
    15,430.70/21,294.26 = 8,356.98/x
  3. Step 3: Cross multiply
    15,430.70x = 21,294.26 × 8,356.98
  4. Step 4: Simplify right side
    15,430.70x = 177,955,704.93
  5. Step 5: Solve for x
    x = 177,955,704.93/15,430.70
  6. Step 6: Final answer
    x = 11,532.57

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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.