Home / 30,866.61-42,595.57-18,117.55

Finding the Fourth Proportional to 30,866.61, 42,595.57 and 18,117.55

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Solution

The fourth proportional to 30,866.61, 42,595.57 and 18,117.55 is: 25,002.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,866.61 : 42,595.57 = 18,117.55 : x
  2. Step 2: Convert to fraction form
    30,866.61/42,595.57 = 18,117.55/x
  3. Step 3: Cross multiply
    30,866.61x = 42,595.57 × 18,117.55
  4. Step 4: Simplify right side
    30,866.61x = 771,727,369.25
  5. Step 5: Solve for x
    x = 771,727,369.25/30,866.61
  6. Step 6: Final answer
    x = 25,002.01

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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.