Home / 15,483.20-21,368.64-9,195.58

Finding the Fourth Proportional to 15,483.20, 21,368.64 and 9,195.58

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Solution

The fourth proportional to 15,483.20, 21,368.64 and 9,195.58 is: 12,690.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,483.20 : 21,368.64 = 9,195.58 : x
  2. Step 2: Convert to fraction form
    15,483.20/21,368.64 = 9,195.58/x
  3. Step 3: Cross multiply
    15,483.20x = 21,368.64 × 9,195.58
  4. Step 4: Simplify right side
    15,483.20x = 196,497,038.61
  5. Step 5: Solve for x
    x = 196,497,038.61/15,483.20
  6. Step 6: Final answer
    x = 12,690.98

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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.