Home / 15,909.02-21,953.71-8,835.90

Finding the Fourth Proportional to 15,909.02, 21,953.71 and 8,835.90

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Solution

The fourth proportional to 15,909.02, 21,953.71 and 8,835.90 is: 12,193.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,909.02 : 21,953.71 = 8,835.90 : x
  2. Step 2: Convert to fraction form
    15,909.02/21,953.71 = 8,835.90/x
  3. Step 3: Cross multiply
    15,909.02x = 21,953.71 × 8,835.90
  4. Step 4: Simplify right side
    15,909.02x = 193,980,714.91
  5. Step 5: Solve for x
    x = 193,980,714.91/15,909.02
  6. Step 6: Final answer
    x = 12,193.13

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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.