Home / 13,280.28-18,327.32-7,312.51

Finding the Fourth Proportional to 13,280.28, 18,327.32 and 7,312.51

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Solution

The fourth proportional to 13,280.28, 18,327.32 and 7,312.51 is: 10,091.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,280.28 : 18,327.32 = 7,312.51 : x
  2. Step 2: Convert to fraction form
    13,280.28/18,327.32 = 7,312.51/x
  3. Step 3: Cross multiply
    13,280.28x = 18,327.32 × 7,312.51
  4. Step 4: Simplify right side
    13,280.28x = 134,018,710.77
  5. Step 5: Solve for x
    x = 134,018,710.77/13,280.28
  6. Step 6: Final answer
    x = 10,091.56

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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.