Home / 15,302.10-21,117.74-8,589.86

Finding the Fourth Proportional to 15,302.10, 21,117.74 and 8,589.86

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Solution

The fourth proportional to 15,302.10, 21,117.74 and 8,589.86 is: 11,854.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,302.10 : 21,117.74 = 8,589.86 : x
  2. Step 2: Convert to fraction form
    15,302.10/21,117.74 = 8,589.86/x
  3. Step 3: Cross multiply
    15,302.10x = 21,117.74 × 8,589.86
  4. Step 4: Simplify right side
    15,302.10x = 181,398,430.12
  5. Step 5: Solve for x
    x = 181,398,430.12/15,302.10
  6. Step 6: Final answer
    x = 11,854.48

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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.