Home / 34,569.05-47,705.90-20,421.86

Finding the Fourth Proportional to 34,569.05, 47,705.90 and 20,421.86

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Solution

The fourth proportional to 34,569.05, 47,705.90 and 20,421.86 is: 28,182.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,569.05 : 47,705.90 = 20,421.86 : x
  2. Step 2: Convert to fraction form
    34,569.05/47,705.90 = 20,421.86/x
  3. Step 3: Cross multiply
    34,569.05x = 47,705.90 × 20,421.86
  4. Step 4: Simplify right side
    34,569.05x = 974,242,870.34
  5. Step 5: Solve for x
    x = 974,242,870.34/34,569.05
  6. Step 6: Final answer
    x = 28,182.52

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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.