Home / 15,443.02-21,311.40-9,155.80

Finding the Fourth Proportional to 15,443.02, 21,311.40 and 9,155.80

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Solution

The fourth proportional to 15,443.02, 21,311.40 and 9,155.80 is: 12,635.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,443.02 : 21,311.40 = 9,155.80 : x
  2. Step 2: Convert to fraction form
    15,443.02/21,311.40 = 9,155.80/x
  3. Step 3: Cross multiply
    15,443.02x = 21,311.40 × 9,155.80
  4. Step 4: Simplify right side
    15,443.02x = 195,122,916.12
  5. Step 5: Solve for x
    x = 195,122,916.12/15,443.02
  6. Step 6: Final answer
    x = 12,635.02

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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.