Home / 30,920,785.76-42,674,621.68-18,697,730.40

Finding the Fourth Proportional to 30,920,785.76, 42,674,621.68 and 18,697,730.40

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Solution

The fourth proportional to 30,920,785.76, 42,674,621.68 and 18,697,730.40 is: 25,805,248.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,920,785.76 : 42,674,621.68 = 18,697,730.40 : x
  2. Step 2: Convert to fraction form
    30,920,785.76/42,674,621.68 = 18,697,730.40/x
  3. Step 3: Cross multiply
    30,920,785.76x = 42,674,621.68 × 18,697,730.40
  4. Step 4: Simplify right side
    30,920,785.76x = 797,918,571,094,635
  5. Step 5: Solve for x
    x = 797,918,571,094,635/30,920,785.76
  6. Step 6: Final answer
    x = 25,805,248.85

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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.