Home / 27,810.32-38,380.99-15,875.45

Finding the Fourth Proportional to 27,810.32, 38,380.99 and 15,875.45

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Solution

The fourth proportional to 27,810.32, 38,380.99 and 15,875.45 is: 21,909.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,810.32 : 38,380.99 = 15,875.45 : x
  2. Step 2: Convert to fraction form
    27,810.32/38,380.99 = 15,875.45/x
  3. Step 3: Cross multiply
    27,810.32x = 38,380.99 × 15,875.45
  4. Step 4: Simplify right side
    27,810.32x = 609,315,216.41
  5. Step 5: Solve for x
    x = 609,315,216.41/27,810.32
  6. Step 6: Final answer
    x = 21,909.68

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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.