Home / 20,860,445.40-28,787,368.40-11,567,785.81

Finding the Fourth Proportional to 20,860,445.40, 28,787,368.40 and 11,567,785.81

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Solution

The fourth proportional to 20,860,445.40, 28,787,368.40 and 11,567,785.81 is: 15,963,518.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,860,445.40 : 28,787,368.40 = 11,567,785.81 : x
  2. Step 2: Convert to fraction form
    20,860,445.40/28,787,368.40 = 11,567,785.81/x
  3. Step 3: Cross multiply
    20,860,445.40x = 28,787,368.40 × 11,567,785.81
  4. Step 4: Simplify right side
    20,860,445.40x = 333,006,111,684,762.38
  5. Step 5: Solve for x
    x = 333,006,111,684,762.38/20,860,445.40
  6. Step 6: Final answer
    x = 15,963,518.77

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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.