Home / 10,598,985.20-15,898,477.80-9,780,172.40

Finding the Fourth Proportional to 10,598,985.20, 15,898,477.80 and 9,780,172.40

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Solution

The fourth proportional to 10,598,985.20, 15,898,477.80 and 9,780,172.40 is: 14,670,258.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,598,985.20 : 15,898,477.80 = 9,780,172.40 : x
  2. Step 2: Convert to fraction form
    10,598,985.20/15,898,477.80 = 9,780,172.40/x
  3. Step 3: Cross multiply
    10,598,985.20x = 15,898,477.80 × 9,780,172.40
  4. Step 4: Simplify right side
    10,598,985.20x = 155,489,853,781,572.72
  5. Step 5: Solve for x
    x = 155,489,853,781,572.72/10,598,985.20
  6. Step 6: Final answer
    x = 14,670,258.60

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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.