Home / 13,071.02-18,038.16-7,102.79

Finding the Fourth Proportional to 13,071.02, 18,038.16 and 7,102.79

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Solution

The fourth proportional to 13,071.02, 18,038.16 and 7,102.79 is: 9,801.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,071.02 : 18,038.16 = 7,102.79 : x
  2. Step 2: Convert to fraction form
    13,071.02/18,038.16 = 7,102.79/x
  3. Step 3: Cross multiply
    13,071.02x = 18,038.16 × 7,102.79
  4. Step 4: Simplify right side
    13,071.02x = 128,121,172.28
  5. Step 5: Solve for x
    x = 128,121,172.28/13,071.02
  6. Step 6: Final answer
    x = 9,801.93

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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.