Home / 28,166,305.80-42,249,458.70-21,789,013.80

Finding the Fourth Proportional to 28,166,305.80, 42,249,458.70 and 21,789,013.80

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Solution

The fourth proportional to 28,166,305.80, 42,249,458.70 and 21,789,013.80 is: 32,683,520.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,166,305.80 : 42,249,458.70 = 21,789,013.80 : x
  2. Step 2: Convert to fraction form
    28,166,305.80/42,249,458.70 = 21,789,013.80/x
  3. Step 3: Cross multiply
    28,166,305.80x = 42,249,458.70 × 21,789,013.80
  4. Step 4: Simplify right side
    28,166,305.80x = 920,574,038,656,830.12
  5. Step 5: Solve for x
    x = 920,574,038,656,830.12/28,166,305.80
  6. Step 6: Final answer
    x = 32,683,520.70

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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.