Home / 30,909.40-42,654.59-16,762.07

Finding the Fourth Proportional to 30,909.40, 42,654.59 and 16,762.07

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Solution

The fourth proportional to 30,909.40, 42,654.59 and 16,762.07 is: 23,131.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,909.40 : 42,654.59 = 16,762.07 : x
  2. Step 2: Convert to fraction form
    30,909.40/42,654.59 = 16,762.07/x
  3. Step 3: Cross multiply
    30,909.40x = 42,654.59 × 16,762.07
  4. Step 4: Simplify right side
    30,909.40x = 714,979,223.40
  5. Step 5: Solve for x
    x = 714,979,223.40/30,909.40
  6. Step 6: Final answer
    x = 23,131.45

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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.