Home / 21,026.96-31,527.12-9,918.08

Finding the Fourth Proportional to 21,026.96, 31,527.12 and 9,918.08

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Solution

The fourth proportional to 21,026.96, 31,527.12 and 9,918.08 is: 14,870.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,026.96 : 31,527.12 = 9,918.08 : x
  2. Step 2: Convert to fraction form
    21,026.96/31,527.12 = 9,918.08/x
  3. Step 3: Cross multiply
    21,026.96x = 31,527.12 × 9,918.08
  4. Step 4: Simplify right side
    21,026.96x = 312,688,498.33
  5. Step 5: Solve for x
    x = 312,688,498.33/21,026.96
  6. Step 6: Final answer
    x = 14,870.84

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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.