Home / 13,287,981.20-19,931,971.80-7,225,617.20

Finding the Fourth Proportional to 13,287,981.20, 19,931,971.80 and 7,225,617.20

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Solution

The fourth proportional to 13,287,981.20, 19,931,971.80 and 7,225,617.20 is: 10,838,425.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,287,981.20 : 19,931,971.80 = 7,225,617.20 : x
  2. Step 2: Convert to fraction form
    13,287,981.20/19,931,971.80 = 7,225,617.20/x
  3. Step 3: Cross multiply
    13,287,981.20x = 19,931,971.80 × 7,225,617.20
  4. Step 4: Simplify right side
    13,287,981.20x = 144,020,798,267,994.97
  5. Step 5: Solve for x
    x = 144,020,798,267,994.97/13,287,981.20
  6. Step 6: Final answer
    x = 10,838,425.80

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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.