Home / 27,810.06-38,380.64-15,875.20

Finding the Fourth Proportional to 27,810.06, 38,380.64 and 15,875.20

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Solution

The fourth proportional to 27,810.06, 38,380.64 and 15,875.20 is: 21,909.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,810.06 : 38,380.64 = 15,875.20 : x
  2. Step 2: Convert to fraction form
    27,810.06/38,380.64 = 15,875.20/x
  3. Step 3: Cross multiply
    27,810.06x = 38,380.64 × 15,875.20
  4. Step 4: Simplify right side
    27,810.06x = 609,300,144.22
  5. Step 5: Solve for x
    x = 609,300,144.22/27,810.06
  6. Step 6: Final answer
    x = 21,909.34

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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.