Home / 15,305,830.36-21,122,045.28-8,430,312.64

Finding the Fourth Proportional to 15,305,830.36, 21,122,045.28 and 8,430,312.64

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Solution

The fourth proportional to 15,305,830.36, 21,122,045.28 and 8,430,312.64 is: 11,633,831.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,305,830.36 : 21,122,045.28 = 8,430,312.64 : x
  2. Step 2: Convert to fraction form
    15,305,830.36/21,122,045.28 = 8,430,312.64/x
  3. Step 3: Cross multiply
    15,305,830.36x = 21,122,045.28 × 8,430,312.64
  4. Step 4: Simplify right side
    15,305,830.36x = 178,065,445,306,636.38
  5. Step 5: Solve for x
    x = 178,065,445,306,636.38/15,305,830.36
  6. Step 6: Final answer
    x = 11,633,831.10

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1.5x scale

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.