Home / 27,810.81-38,381.67-15,875.94

Finding the Fourth Proportional to 27,810.81, 38,381.67 and 15,875.94

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Solution

The fourth proportional to 27,810.81, 38,381.67 and 15,875.94 is: 21,910.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,810.81 : 38,381.67 = 15,875.94 : x
  2. Step 2: Convert to fraction form
    27,810.81/38,381.67 = 15,875.94/x
  3. Step 3: Cross multiply
    27,810.81x = 38,381.67 × 15,875.94
  4. Step 4: Simplify right side
    27,810.81x = 609,345,090.02
  5. Step 5: Solve for x
    x = 609,345,090.02/27,810.81
  6. Step 6: Final answer
    x = 21,910.37

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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.