Home / 28,979,494.79-39,992,661.89-15,927,216.35

Finding the Fourth Proportional to 28,979,494.79, 39,992,661.89 and 15,927,216.35

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Solution

The fourth proportional to 28,979,494.79, 39,992,661.89 and 15,927,216.35 is: 21,980,085.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,979,494.79 : 39,992,661.89 = 15,927,216.35 : x
  2. Step 2: Convert to fraction form
    28,979,494.79/39,992,661.89 = 15,927,216.35/x
  3. Step 3: Cross multiply
    28,979,494.79x = 39,992,661.89 × 15,927,216.35
  4. Step 4: Simplify right side
    28,979,494.79x = 636,971,778,054,830.50
  5. Step 5: Solve for x
    x = 636,971,778,054,830.50/28,979,494.79
  6. Step 6: Final answer
    x = 21,980,085.67

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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.