Home / 28,170.02-38,875.08-15,422.99

Finding the Fourth Proportional to 28,170.02, 38,875.08 and 15,422.99

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Solution

The fourth proportional to 28,170.02, 38,875.08 and 15,422.99 is: 21,283.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,170.02 : 38,875.08 = 15,422.99 : x
  2. Step 2: Convert to fraction form
    28,170.02/38,875.08 = 15,422.99/x
  3. Step 3: Cross multiply
    28,170.02x = 38,875.08 × 15,422.99
  4. Step 4: Simplify right side
    28,170.02x = 599,569,775.71
  5. Step 5: Solve for x
    x = 599,569,775.71/28,170.02
  6. Step 6: Final answer
    x = 21,283.97

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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.