Home / 12,430.79-18,643.47-4,108.83

Finding the Fourth Proportional to 12,430.79, 18,643.47 and 4,108.83

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Solution

The fourth proportional to 12,430.79, 18,643.47 and 4,108.83 is: 6,162.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,430.79 : 18,643.47 = 4,108.83 : x
  2. Step 2: Convert to fraction form
    12,430.79/18,643.47 = 4,108.83/x
  3. Step 3: Cross multiply
    12,430.79x = 18,643.47 × 4,108.83
  4. Step 4: Simplify right side
    12,430.79x = 76,602,848.84
  5. Step 5: Solve for x
    x = 76,602,848.84/12,430.79
  6. Step 6: Final answer
    x = 6,162.35

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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.