Home / 13,345.16-18,417.03-7,680.77

Finding the Fourth Proportional to 13,345.16, 18,417.03 and 7,680.77

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Solution

The fourth proportional to 13,345.16, 18,417.03 and 7,680.77 is: 10,599.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,345.16 : 18,417.03 = 7,680.77 : x
  2. Step 2: Convert to fraction form
    13,345.16/18,417.03 = 7,680.77/x
  3. Step 3: Cross multiply
    13,345.16x = 18,417.03 × 7,680.77
  4. Step 4: Simplify right side
    13,345.16x = 141,456,971.51
  5. Step 5: Solve for x
    x = 141,456,971.51/13,345.16
  6. Step 6: Final answer
    x = 10,599.87

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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.