Home / 28,531.02-39,373.08-15,955.80

Finding the Fourth Proportional to 28,531.02, 39,373.08 and 15,955.80

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Solution

The fourth proportional to 28,531.02, 39,373.08 and 15,955.80 is: 22,019.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,531.02 : 39,373.08 = 15,955.80 : x
  2. Step 2: Convert to fraction form
    28,531.02/39,373.08 = 15,955.80/x
  3. Step 3: Cross multiply
    28,531.02x = 39,373.08 × 15,955.80
  4. Step 4: Simplify right side
    28,531.02x = 628,228,989.86
  5. Step 5: Solve for x
    x = 628,228,989.86/28,531.02
  6. Step 6: Final answer
    x = 22,019.16

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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.