Home / 13,209,263.10-18,228,915.12-7,407,920.28

Finding the Fourth Proportional to 13,209,263.10, 18,228,915.12 and 7,407,920.28

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Solution

The fourth proportional to 13,209,263.10, 18,228,915.12 and 7,407,920.28 is: 10,223,004.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,209,263.10 : 18,228,915.12 = 7,407,920.28 : x
  2. Step 2: Convert to fraction form
    13,209,263.10/18,228,915.12 = 7,407,920.28/x
  3. Step 3: Cross multiply
    13,209,263.10x = 18,228,915.12 × 7,407,920.28
  4. Step 4: Simplify right side
    13,209,263.10x = 135,038,350,095,984.78
  5. Step 5: Solve for x
    x = 135,038,350,095,984.78/13,209,263.10
  6. Step 6: Final answer
    x = 10,223,004.04

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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.