Home / 21,018,962.70-31,528,444.05-10,257,282.45

Finding the Fourth Proportional to 21,018,962.70, 31,528,444.05 and 10,257,282.45

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Solution

The fourth proportional to 21,018,962.70, 31,528,444.05 and 10,257,282.45 is: 15,385,923.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,018,962.70 : 31,528,444.05 = 10,257,282.45 : x
  2. Step 2: Convert to fraction form
    21,018,962.70/31,528,444.05 = 10,257,282.45/x
  3. Step 3: Cross multiply
    21,018,962.70x = 31,528,444.05 × 10,257,282.45
  4. Step 4: Simplify right side
    21,018,962.70x = 323,396,155,829,871.94
  5. Step 5: Solve for x
    x = 323,396,155,829,871.94/21,018,962.70
  6. Step 6: Final answer
    x = 15,385,923.68

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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.