Home / 28,011,673.77-38,656,032.10-15,621,778.86

Finding the Fourth Proportional to 28,011,673.77, 38,656,032.10 and 15,621,778.86

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Solution

The fourth proportional to 28,011,673.77, 38,656,032.10 and 15,621,778.86 is: 21,558,011.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,011,673.77 : 38,656,032.10 = 15,621,778.86 : x
  2. Step 2: Convert to fraction form
    28,011,673.77/38,656,032.10 = 15,621,778.86/x
  3. Step 3: Cross multiply
    28,011,673.77x = 38,656,032.10 × 15,621,778.86
  4. Step 4: Simplify right side
    28,011,673.77x = 603,875,985,071,261.38
  5. Step 5: Solve for x
    x = 603,875,985,071,261.38/28,011,673.77
  6. Step 6: Final answer
    x = 21,558,011.49

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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.