Home / 30,386.13-45,599.45-11,681.61

Finding the Fourth Proportional to 30,386.13, 45,599.45 and 11,681.61

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Solution

The fourth proportional to 30,386.13, 45,599.45 and 11,681.61 is: 17,530.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,386.13 : 45,599.45 = 11,681.61 : x
  2. Step 2: Convert to fraction form
    30,386.13/45,599.45 = 11,681.61/x
  3. Step 3: Cross multiply
    30,386.13x = 45,599.45 × 11,681.61
  4. Step 4: Simplify right side
    30,386.13x = 532,674,991.11
  5. Step 5: Solve for x
    x = 532,674,991.11/30,386.13
  6. Step 6: Final answer
    x = 17,530.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.