Home / 42,624.60-63,956.10-20,429.40

Finding the Fourth Proportional to 42,624.60, 63,956.10 and 20,429.40

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Solution

The fourth proportional to 42,624.60, 63,956.10 and 20,429.40 is: 30,653.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,624.60 : 63,956.10 = 20,429.40 : x
  2. Step 2: Convert to fraction form
    42,624.60/63,956.10 = 20,429.40/x
  3. Step 3: Cross multiply
    42,624.60x = 63,956.10 × 20,429.40
  4. Step 4: Simplify right side
    42,624.60x = 1,306,584,749.34
  5. Step 5: Solve for x
    x = 1,306,584,749.34/42,624.60
  6. Step 6: Final answer
    x = 30,653.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.