Home / 15,484,862.88-21,370,307.76-9,290,142.72

Finding the Fourth Proportional to 15,484,862.88, 21,370,307.76 and 9,290,142.72

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Solution

The fourth proportional to 15,484,862.88, 21,370,307.76 and 9,290,142.72 is: 12,821,115.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,484,862.88 : 21,370,307.76 = 9,290,142.72 : x
  2. Step 2: Convert to fraction form
    15,484,862.88/21,370,307.76 = 9,290,142.72/x
  3. Step 3: Cross multiply
    15,484,862.88x = 21,370,307.76 × 9,290,142.72
  4. Step 4: Simplify right side
    15,484,862.88x = 198,533,209,060,723.53
  5. Step 5: Solve for x
    x = 198,533,209,060,723.53/15,484,862.88
  6. Step 6: Final answer
    x = 12,821,115.09

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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.