Finding the Fourth Proportional to 23,130,781.74, 31,920,392.79 and 12,817,496.61
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Solution
The fourth proportional to 23,130,781.74, 31,920,392.79 and 12,817,496.61 is: 17,688,097.66
Step by Step Solution
- Step 1: Write the proportion equation
23,130,781.74 : 31,920,392.79 = 12,817,496.61 : x - Step 2: Convert to fraction form
23,130,781.74/31,920,392.79 = 12,817,496.61/x - Step 3: Cross multiply
23,130,781.74x = 31,920,392.79 × 12,817,496.61 - Step 4: Simplify right side
23,130,781.74x = 409,139,526,375,693.44 - Step 5: Solve for x
x = 409,139,526,375,693.44/23,130,781.74 - Step 6: Final answer
x = 17,688,097.66
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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.