Home / 19,331.40-26,681.22-12,618.12

Finding the Fourth Proportional to 19,331.40, 26,681.22 and 12,618.12

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Solution

The fourth proportional to 19,331.40, 26,681.22 and 12,618.12 is: 17,415.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,331.40 : 26,681.22 = 12,618.12 : x
  2. Step 2: Convert to fraction form
    19,331.40/26,681.22 = 12,618.12/x
  3. Step 3: Cross multiply
    19,331.40x = 26,681.22 × 12,618.12
  4. Step 4: Simplify right side
    19,331.40x = 336,666,835.71
  5. Step 5: Solve for x
    x = 336,666,835.71/19,331.40
  6. Step 6: Final answer
    x = 17,415.54

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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.