Home / 12,587,657.72-18,884,628.95-4,390,417.76

Finding the Fourth Proportional to 12,587,657.72, 18,884,628.95 and 4,390,417.76

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Solution

The fourth proportional to 12,587,657.72, 18,884,628.95 and 4,390,417.76 is: 6,586,722.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,587,657.72 : 18,884,628.95 = 4,390,417.76 : x
  2. Step 2: Convert to fraction form
    12,587,657.72/18,884,628.95 = 4,390,417.76/x
  3. Step 3: Cross multiply
    12,587,657.72x = 18,884,628.95 × 4,390,417.76
  4. Step 4: Simplify right side
    12,587,657.72x = 82,911,410,216,714.92
  5. Step 5: Solve for x
    x = 82,911,410,216,714.92/12,587,657.72
  6. Step 6: Final answer
    x = 6,586,722.65

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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.