Home / 21,024,698.40-31,537,047.60-12,911,365.80

Finding the Fourth Proportional to 21,024,698.40, 31,537,047.60 and 12,911,365.80

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Solution

The fourth proportional to 21,024,698.40, 31,537,047.60 and 12,911,365.80 is: 19,367,048.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,024,698.40 : 31,537,047.60 = 12,911,365.80 : x
  2. Step 2: Convert to fraction form
    21,024,698.40/31,537,047.60 = 12,911,365.80/x
  3. Step 3: Cross multiply
    21,024,698.40x = 31,537,047.60 × 12,911,365.80
  4. Step 4: Simplify right side
    21,024,698.40x = 407,186,357,815,612.12
  5. Step 5: Solve for x
    x = 407,186,357,815,612.12/21,024,698.40
  6. Step 6: Final answer
    x = 19,367,048.70

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1.5x scale

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.