Home / 12,743.40-19,117.80-4,430.19

Finding the Fourth Proportional to 12,743.40, 19,117.80 and 4,430.19

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Solution

The fourth proportional to 12,743.40, 19,117.80 and 4,430.19 is: 6,646.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,743.40 : 19,117.80 = 4,430.19 : x
  2. Step 2: Convert to fraction form
    12,743.40/19,117.80 = 4,430.19/x
  3. Step 3: Cross multiply
    12,743.40x = 19,117.80 × 4,430.19
  4. Step 4: Simplify right side
    12,743.40x = 84,695,486.38
  5. Step 5: Solve for x
    x = 84,695,486.38/12,743.40
  6. Step 6: Final answer
    x = 6,646.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.