Home / 20,670.08-28,525.46-12,710.79

Finding the Fourth Proportional to 20,670.08, 28,525.46 and 12,710.79

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Solution

The fourth proportional to 20,670.08, 28,525.46 and 12,710.79 is: 17,541.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,670.08 : 28,525.46 = 12,710.79 : x
  2. Step 2: Convert to fraction form
    20,670.08/28,525.46 = 12,710.79/x
  3. Step 3: Cross multiply
    20,670.08x = 28,525.46 × 12,710.79
  4. Step 4: Simplify right side
    20,670.08x = 362,581,068.16
  5. Step 5: Solve for x
    x = 362,581,068.16/20,670.08
  6. Step 6: Final answer
    x = 17,541.35

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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.