Home / 15,155.02-20,913.33-8,440.39

Finding the Fourth Proportional to 15,155.02, 20,913.33 and 8,440.39

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Solution

The fourth proportional to 15,155.02, 20,913.33 and 8,440.39 is: 11,647.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,155.02 : 20,913.33 = 8,440.39 : x
  2. Step 2: Convert to fraction form
    15,155.02/20,913.33 = 8,440.39/x
  3. Step 3: Cross multiply
    15,155.02x = 20,913.33 × 8,440.39
  4. Step 4: Simplify right side
    15,155.02x = 176,516,661.40
  5. Step 5: Solve for x
    x = 176,516,661.40/15,155.02
  6. Step 6: Final answer
    x = 11,647.41

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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.