Home / 30,859.80-42,586.40-17,430.36

Finding the Fourth Proportional to 30,859.80, 42,586.40 and 17,430.36

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Solution

The fourth proportional to 30,859.80, 42,586.40 and 17,430.36 is: 24,053.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,859.80 : 42,586.40 = 17,430.36 : x
  2. Step 2: Convert to fraction form
    30,859.80/42,586.40 = 17,430.36/x
  3. Step 3: Cross multiply
    30,859.80x = 42,586.40 × 17,430.36
  4. Step 4: Simplify right side
    30,859.80x = 742,296,283.10
  5. Step 5: Solve for x
    x = 742,296,283.10/30,859.80
  6. Step 6: Final answer
    x = 24,053.83

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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.