Home / 18,973.19-28,457.12-11,931.74

Finding the Fourth Proportional to 18,973.19, 28,457.12 and 11,931.74

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Solution

The fourth proportional to 18,973.19, 28,457.12 and 11,931.74 is: 17,895.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,973.19 : 28,457.12 = 11,931.74 : x
  2. Step 2: Convert to fraction form
    18,973.19/28,457.12 = 11,931.74/x
  3. Step 3: Cross multiply
    18,973.19x = 28,457.12 × 11,931.74
  4. Step 4: Simplify right side
    18,973.19x = 339,542,968.47
  5. Step 5: Solve for x
    x = 339,542,968.47/18,973.19
  6. Step 6: Final answer
    x = 17,895.93

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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.