Home / 13,345.81-18,417.33-7,377.58

Finding the Fourth Proportional to 13,345.81, 18,417.33 and 7,377.58

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Solution

The fourth proportional to 13,345.81, 18,417.33 and 7,377.58 is: 10,181.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,345.81 : 18,417.33 = 7,377.58 : x
  2. Step 2: Convert to fraction form
    13,345.81/18,417.33 = 7,377.58/x
  3. Step 3: Cross multiply
    13,345.81x = 18,417.33 × 7,377.58
  4. Step 4: Simplify right side
    13,345.81x = 135,875,325.46
  5. Step 5: Solve for x
    x = 135,875,325.46/13,345.81
  6. Step 6: Final answer
    x = 10,181.12

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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.