Home / 39,130.81-53,999.06-21,225.22

Finding the Fourth Proportional to 39,130.81, 53,999.06 and 21,225.22

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Solution

The fourth proportional to 39,130.81, 53,999.06 and 21,225.22 is: 29,290.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,130.81 : 53,999.06 = 21,225.22 : x
  2. Step 2: Convert to fraction form
    39,130.81/53,999.06 = 21,225.22/x
  3. Step 3: Cross multiply
    39,130.81x = 53,999.06 × 21,225.22
  4. Step 4: Simplify right side
    39,130.81x = 1,146,141,687.17
  5. Step 5: Solve for x
    x = 1,146,141,687.17/39,130.81
  6. Step 6: Final answer
    x = 29,290.01

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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.