Home / 39,034.85-53,868.07-21,130.00

Finding the Fourth Proportional to 39,034.85, 53,868.07 and 21,130.00

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Solution

The fourth proportional to 39,034.85, 53,868.07 and 21,130.00 is: 29,159.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,034.85 : 53,868.07 = 21,130.00 : x
  2. Step 2: Convert to fraction form
    39,034.85/53,868.07 = 21,130.00/x
  3. Step 3: Cross multiply
    39,034.85x = 53,868.07 × 21,130.00
  4. Step 4: Simplify right side
    39,034.85x = 1,138,232,210.84
  5. Step 5: Solve for x
    x = 1,138,232,210.84/39,034.85
  6. Step 6: Final answer
    x = 29,159.39

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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.