Home / 31,565.32-43,564.02-18,136.55

Finding the Fourth Proportional to 31,565.32, 43,564.02 and 18,136.55

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Solution

The fourth proportional to 31,565.32, 43,564.02 and 18,136.55 is: 25,030.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,565.32 : 43,564.02 = 18,136.55 : x
  2. Step 2: Convert to fraction form
    31,565.32/43,564.02 = 18,136.55/x
  3. Step 3: Cross multiply
    31,565.32x = 43,564.02 × 18,136.55
  4. Step 4: Simplify right side
    31,565.32x = 790,101,026.93
  5. Step 5: Solve for x
    x = 790,101,026.93/31,565.32
  6. Step 6: Final answer
    x = 25,030.67

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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.