Home / 39,370.10-54,330.78-21,465.18

Finding the Fourth Proportional to 39,370.10, 54,330.78 and 21,465.18

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Solution

The fourth proportional to 39,370.10, 54,330.78 and 21,465.18 is: 29,621.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,370.10 : 54,330.78 = 21,465.18 : x
  2. Step 2: Convert to fraction form
    39,370.10/54,330.78 = 21,465.18/x
  3. Step 3: Cross multiply
    39,370.10x = 54,330.78 × 21,465.18
  4. Step 4: Simplify right side
    39,370.10x = 1,166,219,718.82
  5. Step 5: Solve for x
    x = 1,166,219,718.82/39,370.10
  6. Step 6: Final answer
    x = 29,621.96

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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.