Home / 34,300.40-47,331.32-21,378.47

Finding the Fourth Proportional to 34,300.40, 47,331.32 and 21,378.47

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Solution

The fourth proportional to 34,300.40, 47,331.32 and 21,378.47 is: 29,500.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,300.40 : 47,331.32 = 21,378.47 : x
  2. Step 2: Convert to fraction form
    34,300.40/47,331.32 = 21,378.47/x
  3. Step 3: Cross multiply
    34,300.40x = 47,331.32 × 21,378.47
  4. Step 4: Simplify right side
    34,300.40x = 1,011,870,861.13
  5. Step 5: Solve for x
    x = 1,011,870,861.13/34,300.40
  6. Step 6: Final answer
    x = 29,500.27

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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.