Home / 20,999,981.60-31,506,970.80-10,224,000.80

Finding the Fourth Proportional to 20,999,981.60, 31,506,970.80 and 10,224,000.80

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Solution

The fourth proportional to 20,999,981.60, 31,506,970.80 and 10,224,000.80 is: 15,339,408.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,999,981.60 : 31,506,970.80 = 10,224,000.80 : x
  2. Step 2: Convert to fraction form
    20,999,981.60/31,506,970.80 = 10,224,000.80/x
  3. Step 3: Cross multiply
    20,999,981.60x = 31,506,970.80 × 10,224,000.80
  4. Step 4: Simplify right side
    20,999,981.60x = 322,127,294,664,776.69
  5. Step 5: Solve for x
    x = 322,127,294,664,776.69/20,999,981.60
  6. Step 6: Final answer
    x = 15,339,408.42

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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.