Home / 21,246.12-29,290.65-15,570.86

Finding the Fourth Proportional to 21,246.12, 29,290.65 and 15,570.86

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Solution

The fourth proportional to 21,246.12, 29,290.65 and 15,570.86 is: 21,466.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,246.12 : 29,290.65 = 15,570.86 : x
  2. Step 2: Convert to fraction form
    21,246.12/29,290.65 = 15,570.86/x
  3. Step 3: Cross multiply
    21,246.12x = 29,290.65 × 15,570.86
  4. Step 4: Simplify right side
    21,246.12x = 456,080,464.01
  5. Step 5: Solve for x
    x = 456,080,464.01/21,246.12
  6. Step 6: Final answer
    x = 21,466.53

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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.