Home / 15,377.94-21,221.98-9,409.50

Finding the Fourth Proportional to 15,377.94, 21,221.98 and 9,409.50

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Solution

The fourth proportional to 15,377.94, 21,221.98 and 9,409.50 is: 12,985.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,377.94 : 21,221.98 = 9,409.50 : x
  2. Step 2: Convert to fraction form
    15,377.94/21,221.98 = 9,409.50/x
  3. Step 3: Cross multiply
    15,377.94x = 21,221.98 × 9,409.50
  4. Step 4: Simplify right side
    15,377.94x = 199,688,220.81
  5. Step 5: Solve for x
    x = 199,688,220.81/15,377.94
  6. Step 6: Final answer
    x = 12,985.37

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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.