Home / 20,219,821.60-30,329,732.40-12,567,071.20

Finding the Fourth Proportional to 20,219,821.60, 30,329,732.40 and 12,567,071.20

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Solution

The fourth proportional to 20,219,821.60, 30,329,732.40 and 12,567,071.20 is: 18,850,606.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,219,821.60 : 30,329,732.40 = 12,567,071.20 : x
  2. Step 2: Convert to fraction form
    20,219,821.60/30,329,732.40 = 12,567,071.20/x
  3. Step 3: Cross multiply
    20,219,821.60x = 30,329,732.40 × 12,567,071.20
  4. Step 4: Simplify right side
    20,219,821.60x = 381,155,906,547,746.81
  5. Step 5: Solve for x
    x = 381,155,906,547,746.81/20,219,821.60
  6. Step 6: Final answer
    x = 18,850,606.80

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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.