Home / 15,328.93-21,159.70-8,957.59

Finding the Fourth Proportional to 15,328.93, 21,159.70 and 8,957.59

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Solution

The fourth proportional to 15,328.93, 21,159.70 and 8,957.59 is: 12,364.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,328.93 : 21,159.70 = 8,957.59 : x
  2. Step 2: Convert to fraction form
    15,328.93/21,159.70 = 8,957.59/x
  3. Step 3: Cross multiply
    15,328.93x = 21,159.70 × 8,957.59
  4. Step 4: Simplify right side
    15,328.93x = 189,539,939.52
  5. Step 5: Solve for x
    x = 189,539,939.52/15,328.93
  6. Step 6: Final answer
    x = 12,364.85

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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.