Home / 15,483.08-21,370.02-9,519.86

Finding the Fourth Proportional to 15,483.08, 21,370.02 and 9,519.86

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Solution

The fourth proportional to 15,483.08, 21,370.02 and 9,519.86 is: 13,139.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,483.08 : 21,370.02 = 9,519.86 : x
  2. Step 2: Convert to fraction form
    15,483.08/21,370.02 = 9,519.86/x
  3. Step 3: Cross multiply
    15,483.08x = 21,370.02 × 9,519.86
  4. Step 4: Simplify right side
    15,483.08x = 203,439,598.60
  5. Step 5: Solve for x
    x = 203,439,598.60/15,483.08
  6. Step 6: Final answer
    x = 13,139.48

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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.