Home / 13,070.90-18,037.86-7,102.64

Finding the Fourth Proportional to 13,070.90, 18,037.86 and 7,102.64

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Solution

The fourth proportional to 13,070.90, 18,037.86 and 7,102.64 is: 9,801.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,070.90 : 18,037.86 = 7,102.64 : x
  2. Step 2: Convert to fraction form
    13,070.90/18,037.86 = 7,102.64/x
  3. Step 3: Cross multiply
    13,070.90x = 18,037.86 × 7,102.64
  4. Step 4: Simplify right side
    13,070.90x = 128,116,425.95
  5. Step 5: Solve for x
    x = 128,116,425.95/13,070.90
  6. Step 6: Final answer
    x = 9,801.65

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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.