Home / 27,777.47-38,337.89-15,681.63

Finding the Fourth Proportional to 27,777.47, 38,337.89 and 15,681.63

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Solution

The fourth proportional to 27,777.47, 38,337.89 and 15,681.63 is: 21,643.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,777.47 : 38,337.89 = 15,681.63 : x
  2. Step 2: Convert to fraction form
    27,777.47/38,337.89 = 15,681.63/x
  3. Step 3: Cross multiply
    27,777.47x = 38,337.89 × 15,681.63
  4. Step 4: Simplify right side
    27,777.47x = 601,200,605.96
  5. Step 5: Solve for x
    x = 601,200,605.96/27,777.47
  6. Step 6: Final answer
    x = 21,643.46

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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.