Home / 28,117.02-38,801.16-15,541.50

Finding the Fourth Proportional to 28,117.02, 38,801.16 and 15,541.50

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Solution

The fourth proportional to 28,117.02, 38,801.16 and 15,541.50 is: 21,447.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,117.02 : 38,801.16 = 15,541.50 : x
  2. Step 2: Convert to fraction form
    28,117.02/38,801.16 = 15,541.50/x
  3. Step 3: Cross multiply
    28,117.02x = 38,801.16 × 15,541.50
  4. Step 4: Simplify right side
    28,117.02x = 603,028,228.14
  5. Step 5: Solve for x
    x = 603,028,228.14/28,117.02
  6. Step 6: Final answer
    x = 21,447.09

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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.