Home / 39,681.48-54,762.02-21,777.13

Finding the Fourth Proportional to 39,681.48, 54,762.02 and 21,777.13

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Solution

The fourth proportional to 39,681.48, 54,762.02 and 21,777.13 is: 30,053.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,681.48 : 54,762.02 = 21,777.13 : x
  2. Step 2: Convert to fraction form
    39,681.48/54,762.02 = 21,777.13/x
  3. Step 3: Cross multiply
    39,681.48x = 54,762.02 × 21,777.13
  4. Step 4: Simplify right side
    39,681.48x = 1,192,559,628.60
  5. Step 5: Solve for x
    x = 1,192,559,628.60/39,681.48
  6. Step 6: Final answer
    x = 30,053.31

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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.