Home / 39,035.16-53,868.53-21,130.11

Finding the Fourth Proportional to 39,035.16, 53,868.53 and 21,130.11

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Solution

The fourth proportional to 39,035.16, 53,868.53 and 21,130.11 is: 29,159.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,035.16 : 53,868.53 = 21,130.11 : x
  2. Step 2: Convert to fraction form
    39,035.16/53,868.53 = 21,130.11/x
  3. Step 3: Cross multiply
    39,035.16x = 53,868.53 × 21,130.11
  4. Step 4: Simplify right side
    39,035.16x = 1,138,247,858.79
  5. Step 5: Solve for x
    x = 1,138,247,858.79/39,035.16
  6. Step 6: Final answer
    x = 29,159.55

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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.