Home / 12,470.40-17,200.35-7,430.74

Finding the Fourth Proportional to 12,470.40, 17,200.35 and 7,430.74

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Solution

The fourth proportional to 12,470.40, 17,200.35 and 7,430.74 is: 10,249.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,470.40 : 17,200.35 = 7,430.74 : x
  2. Step 2: Convert to fraction form
    12,470.40/17,200.35 = 7,430.74/x
  3. Step 3: Cross multiply
    12,470.40x = 17,200.35 × 7,430.74
  4. Step 4: Simplify right side
    12,470.40x = 127,811,285.76
  5. Step 5: Solve for x
    x = 127,811,285.76/12,470.40
  6. Step 6: Final answer
    x = 10,249.17

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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.