Home / 15,509,721.15-21,389,481.81-9,709,031.70

Finding the Fourth Proportional to 15,509,721.15, 21,389,481.81 and 9,709,031.70

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Solution

The fourth proportional to 15,509,721.15, 21,389,481.81 and 9,709,031.70 is: 13,389,741.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,509,721.15 : 21,389,481.81 = 9,709,031.70 : x
  2. Step 2: Convert to fraction form
    15,509,721.15/21,389,481.81 = 9,709,031.70/x
  3. Step 3: Cross multiply
    15,509,721.15x = 21,389,481.81 × 9,709,031.70
  4. Step 4: Simplify right side
    15,509,721.15x = 207,671,156,939,863.34
  5. Step 5: Solve for x
    x = 207,671,156,939,863.34/15,509,721.15
  6. Step 6: Final answer
    x = 13,389,741.50

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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.