Home / 15,402,729.60-21,254,958.48-8,432,070.80

Finding the Fourth Proportional to 15,402,729.60, 21,254,958.48 and 8,432,070.80

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Solution

The fourth proportional to 15,402,729.60, 21,254,958.48 and 8,432,070.80 is: 11,635,815.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,402,729.60 : 21,254,958.48 = 8,432,070.80 : x
  2. Step 2: Convert to fraction form
    15,402,729.60/21,254,958.48 = 8,432,070.80/x
  3. Step 3: Cross multiply
    15,402,729.60x = 21,254,958.48 × 8,432,070.80
  4. Step 4: Simplify right side
    15,402,729.60x = 179,223,314,754,420.41
  5. Step 5: Solve for x
    x = 179,223,314,754,420.41/15,402,729.60
  6. Step 6: Final answer
    x = 11,635,815.17

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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.