Home / 13,280.51-18,326.70-7,312.16

Finding the Fourth Proportional to 13,280.51, 18,326.70 and 7,312.16

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Solution

The fourth proportional to 13,280.51, 18,326.70 and 7,312.16 is: 10,090.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,280.51 : 18,326.70 = 7,312.16 : x
  2. Step 2: Convert to fraction form
    13,280.51/18,326.70 = 7,312.16/x
  3. Step 3: Cross multiply
    13,280.51x = 18,326.70 × 7,312.16
  4. Step 4: Simplify right side
    13,280.51x = 134,007,671.04
  5. Step 5: Solve for x
    x = 134,007,671.04/13,280.51
  6. Step 6: Final answer
    x = 10,090.56

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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.