Home / 39,035.16-53,868.50-21,130.31

Finding the Fourth Proportional to 39,035.16, 53,868.50 and 21,130.31

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Solution

The fourth proportional to 39,035.16, 53,868.50 and 21,130.31 is: 29,159.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,035.16 : 53,868.50 = 21,130.31 : x
  2. Step 2: Convert to fraction form
    39,035.16/53,868.50 = 21,130.31/x
  3. Step 3: Cross multiply
    39,035.16x = 53,868.50 × 21,130.31
  4. Step 4: Simplify right side
    39,035.16x = 1,138,258,104.24
  5. Step 5: Solve for x
    x = 1,138,258,104.24/39,035.16
  6. Step 6: Final answer
    x = 29,159.82

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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.