Home / 27,810.42-38,382.75-15,877.50

Finding the Fourth Proportional to 27,810.42, 38,382.75 and 15,877.50

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Solution

The fourth proportional to 27,810.42, 38,382.75 and 15,877.50 is: 21,913.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,810.42 : 38,382.75 = 15,877.50 : x
  2. Step 2: Convert to fraction form
    27,810.42/38,382.75 = 15,877.50/x
  3. Step 3: Cross multiply
    27,810.42x = 38,382.75 × 15,877.50
  4. Step 4: Simplify right side
    27,810.42x = 609,422,113.13
  5. Step 5: Solve for x
    x = 609,422,113.13/27,810.42
  6. Step 6: Final answer
    x = 21,913.45

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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.